From 22df450d9569a86b0241d0b83c2ce5643878f1f8 Mon Sep 17 00:00:00 2001
From: baltasarq <baltasarq@gmail.com>
Date: Tue, 17 May 2016 00:45:44 +0200
Subject: [PATCH] Inspector nearly finished, except for renaming methods

---
 .gitignore                                    |   2 +-
 .idea/workspace.xml                           | 612 +++++++++---------
 ToDo.txt                                      |   1 -
 .../devbaltasarq/pooi/core/Interpreter.java   |   4 +-
 src/com/devbaltasarq/pooi/core/ObjectBag.java |  78 ++-
 src/com/devbaltasarq/pooi/core/Parser.java    |   6 +-
 src/com/devbaltasarq/pooi/core/Runtime.java   |   4 +-
 .../pooi/core/evaluables/Method.java          |  21 +
 .../InterpretedMethod.java                    |   9 +-
 .../{method => methods}/NativeMethod.java     |   2 +-
 .../nativemethods/NativeMethodCopy.java       |   9 +-
 .../NativeMethodCreateChild.java              |   9 +-
 .../nativemethods/NativeMethodErase.java      |   9 +-
 .../nativemethods/NativeMethodGetName.java    |   9 +-
 .../nativemethods/NativeMethodGetPath.java    |   9 +-
 .../nativemethods/NativeMethodIntAbs.java     |   9 +-
 .../NativeMethodIntDivideBy.java              |   9 +-
 .../NativeMethodIntIsEqualTo.java             |   9 +-
 .../NativeMethodIntIsGreaterThan.java         |   9 +-
 .../NativeMethodIntIsLessThan.java            |   9 +-
 .../NativeMethodIntIsNegative.java            |   9 +-
 .../NativeMethodIntMultiplyBy.java            |   9 +-
 .../NativeMethodIntSubstract.java             |   9 +-
 .../nativemethods/NativeMethodIntSum.java     |   9 +-
 .../nativemethods/NativeMethodIs.java         |   9 +-
 .../nativemethods/NativeMethodList.java       |   9 +-
 .../nativemethods/NativeMethodOsNow.java      |   9 +-
 .../nativemethods/NativeMethodRealAbs.java    |   9 +-
 .../NativeMethodRealDivideBy.java             |   9 +-
 .../NativeMethodRealIsEqualTo.java            |   9 +-
 .../NativeMethodRealIsGreaterThan.java        |   9 +-
 .../NativeMethodRealIsLessThan.java           |   9 +-
 .../NativeMethodRealIsNegative.java           |   9 +-
 .../NativeMethodRealMultiplyBy.java           |   9 +-
 .../NativeMethodRealSubstract.java            |   9 +-
 .../nativemethods/NativeMethodRealSum.java    |   9 +-
 .../nativemethods/NativeMethodSet.java        |  11 +-
 .../nativemethods/NativeMethodSetName.java    |  21 +-
 .../nativemethods/NativeMethodStr.java        |   9 +-
 .../nativemethods/NativeMethodStrCharAt.java  |   9 +-
 .../nativemethods/NativeMethodStrConcat.java  |   9 +-
 .../nativemethods/NativeMethodStrIsEmpty.java |   9 +-
 .../NativeMethodStrIsEqualTo.java             |   9 +-
 .../NativeMethodStrIsGreaterThan.java         |   9 +-
 .../NativeMethodStrIsLessThan.java            |   9 +-
 .../NativeMethodStrIsNumber.java              |   9 +-
 .../nativemethods/NativeMethodStrLeft.java    |   9 +-
 .../nativemethods/NativeMethodStrLength.java  |   9 +-
 .../nativemethods/NativeMethodStrMays.java    |   9 +-
 .../nativemethods/NativeMethodStrMins.java    |   9 +-
 .../nativemethods/NativeMethodStrRight.java   |   9 +-
 .../nativemethods/NativeMethodStrSub.java     |   9 +-
 .../nativemethods/NativeMethodStrToInt.java   |   9 +-
 .../nativemethods/NativeMethodStrToReal.java  |   9 +-
 .../nativemethods/NativeMethodStrTrim.java    |   9 +-
 .../devbaltasarq/pooi/core/objs/ObjectOs.java |   2 +-
 .../pooi/core/objs/ObjectParent.java          |   4 +-
 .../devbaltasarq/pooi/res/addAttribute.png    | Bin 559 -> 438 bytes
 src/com/devbaltasarq/pooi/res/addMethod.png   | Bin 640 -> 527 bytes
 src/com/devbaltasarq/pooi/res/clear.png       | Bin 389 -> 0 bytes
 src/com/devbaltasarq/pooi/res/copy.png        | Bin 296 -> 193 bytes
 src/com/devbaltasarq/pooi/res/delete.png      | Bin 0 -> 265 bytes
 src/com/devbaltasarq/pooi/res/execute.png     | Bin 0 -> 452 bytes
 src/com/devbaltasarq/pooi/ui/Inspector.java   | 444 ++++++++-----
 .../devbaltasarq/pooi/ui/VisualEngine.java    |  17 +-
 65 files changed, 1007 insertions(+), 618 deletions(-)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/InterpretedMethod.java (95%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/NativeMethod.java (96%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodCopy.java (81%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodCreateChild.java (79%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodErase.java (79%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodGetName.java (77%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodGetPath.java (77%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntAbs.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntDivideBy.java (89%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntIsEqualTo.java (87%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntIsGreaterThan.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntIsLessThan.java (87%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntIsNegative.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntMultiplyBy.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntSubstract.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIntSum.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodIs.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodList.java (76%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodOsNow.java (85%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealAbs.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealDivideBy.java (89%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealIsEqualTo.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealIsGreaterThan.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealIsLessThan.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealIsNegative.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealMultiplyBy.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealSubstract.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodRealSum.java (89%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodSet.java (82%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodSetName.java (70%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStr.java (79%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrCharAt.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrConcat.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrIsEmpty.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrIsEqualTo.java (86%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrIsGreaterThan.java (86%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrIsLessThan.java (86%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrIsNumber.java (85%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrLeft.java (89%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrLength.java (83%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrMays.java (84%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrMins.java (84%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrRight.java (89%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrSub.java (88%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrToInt.java (86%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrToReal.java (84%)
 rename src/com/devbaltasarq/pooi/core/evaluables/{method => methods}/nativemethods/NativeMethodStrTrim.java (83%)
 delete mode 100644 src/com/devbaltasarq/pooi/res/clear.png
 create mode 100644 src/com/devbaltasarq/pooi/res/delete.png
 create mode 100644 src/com/devbaltasarq/pooi/res/execute.png

diff --git a/.gitignore b/.gitignore
index a5d0c00..7f4ab4d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 *.class
-out
+out/
 # Backup files
 *~
 *.bak
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 02c8362..73cf8ba 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -7,7 +7,69 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="8a88262f-88f4-4f1f-8fed-10700b7b5117" name="Default" comment="">
+      <change type="DELETED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/res/clear.png" afterPath="" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/InterpretedMethod.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/NativeMethod.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/NativeMethod.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCopy.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCopy.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCreateChild.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCreateChild.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodErase.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodErase.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetName.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetName.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetPath.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetPath.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntAbs.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntAbs.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntDivideBy.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntDivideBy.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsEqualTo.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsEqualTo.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsGreaterThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsGreaterThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsLessThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsLessThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsNegative.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsNegative.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntMultiplyBy.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntMultiplyBy.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSubstract.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSubstract.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSum.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSum.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIs.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIs.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodList.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodList.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodOsNow.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodOsNow.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealAbs.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealAbs.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealDivideBy.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealDivideBy.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsEqualTo.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsEqualTo.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsGreaterThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsGreaterThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsLessThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsLessThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsNegative.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsNegative.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealMultiplyBy.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealMultiplyBy.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSubstract.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSubstract.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSum.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSum.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSet.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSet.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSetName.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSetName.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStr.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStr.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrCharAt.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrCharAt.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrConcat.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrConcat.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEmpty.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEmpty.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEqualTo.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEqualTo.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsGreaterThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsGreaterThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsLessThan.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsLessThan.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsNumber.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsNumber.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLeft.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLeft.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLength.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLength.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMays.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMays.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMins.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMins.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrRight.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrRight.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrSub.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrSub.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToInt.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToInt.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToReal.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToReal.java" />
+      <change type="MOVED" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrTrim.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrTrim.java" />
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       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/ToDo.txt" afterPath="$PROJECT_DIR$/ToDo.txt" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Interpreter.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Interpreter.java" />
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+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Parser.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Parser.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Runtime.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Runtime.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Method.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Method.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java" />
+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java" />
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+      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/VisualEngine.java" afterPath="$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/VisualEngine.java" />
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@@ -71,91 +133,25 @@
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+      <file leaf-file-name="Inspector.java" pinned="false" current-in-tab="true">
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-              <caret line="159" column="31" selection-start-line="159" selection-start-column="31" selection-end-line="159" selection-end-column="31" />
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+                <element signature="imports" expanded="true" />
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-      <file leaf-file-name="Method.java" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Method.java">
+      <file leaf-file-name="Member.java" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Member.java">
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+                <element signature="e#440#441#0" expanded="true" />
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@@ -164,24 +160,22 @@
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               <folding>
-                <element signature="imports" expanded="true" />
+                <element signature="e#36418#36419#0" expanded="true" />
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-        <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/ObjectBox.java">
+      <file leaf-file-name="ObjectBag.java" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java">
           <provider selected="true" editor-type-id="text-editor">
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@@ -211,57 +205,57 @@
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       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/VisualEngine.java">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Attribute.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="323">
-          <caret line="688" column="33" selection-start-line="688" selection-start-column="33" selection-end-line="688" selection-end-column="33" />
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
+        <state relative-caret-position="221">
+          <caret line="21" column="21" selection-start-line="21" selection-start-column="21" selection-end-line="21" selection-end-column="21" />
+          <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Reserved.java">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSetName.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="300">
+          <caret line="41" column="26" selection-start-line="41" selection-start-column="26" selection-end-line="41" selection-end-column="26" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/Member.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="273">
-          <caret line="33" column="0" selection-start-line="33" selection-start-column="0" selection-end-line="33" selection-end-column="0" />
+        <state relative-caret-position="189">
+          <caret line="21" column="0" selection-start-line="21" selection-start-column="0" selection-end-line="21" selection-end-column="0" />
           <folding>
-            <element signature="e#1117#1118#0" expanded="true" />
+            <element signature="e#440#441#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSetName.java">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="120">
-          <caret line="44" column="9" selection-start-line="44" selection-start-column="9" selection-end-line="44" selection-end-column="9" />
+        <state relative-caret-position="142">
+          <caret line="643" column="0" selection-start-line="643" selection-start-column="0" selection-end-line="643" selection-end-column="0" />
           <folding />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/ObjectBag.java">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/VisualEngine.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="132">
-          <caret line="134" column="0" selection-start-line="134" selection-start-column="0" selection-end-line="134" selection-end-column="0" />
-          <folding />
+        <state relative-caret-position="148">
+          <caret line="812" column="0" selection-start-line="812" selection-start-column="0" selection-end-line="812" selection-end-column="0" />
+          <folding>
+            <element signature="e#36418#36419#0" expanded="true" />
+            <element signature="e#36457#36458#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/core/Interpreter.java">
+    <entry file="file://$PROJECT_DIR$/src/com/devbaltasarq/pooi/ui/Inspector.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="278">
-          <caret line="100" column="0" selection-start-line="100" selection-start-column="0" selection-end-line="100" selection-end-column="0" />
-          <folding />
+        <state relative-caret-position="148">
+          <caret line="430" column="42" selection-start-line="430" selection-start-column="42" selection-end-line="430" selection-end-column="42" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
diff --git a/ToDo.txt b/ToDo.txt
index db6b759..f09e42b 100644
--- a/ToDo.txt
+++ b/ToDo.txt
@@ -3,4 +3,3 @@
 - Needs Math object with sqr, sqrt, PI.
 - Needs "os" object with import()... These could be imported objects stored in a special dir (part of the jar) that could be imported.
 - Needs libraries, such as Complex. This could be provided with import, and loaded as any transcription.
-- Store the last directory
diff --git a/src/com/devbaltasarq/pooi/core/Interpreter.java b/src/com/devbaltasarq/pooi/core/Interpreter.java
index f958e8c..96b4215 100644
--- a/src/com/devbaltasarq/pooi/core/Interpreter.java
+++ b/src/com/devbaltasarq/pooi/core/Interpreter.java
@@ -3,8 +3,8 @@
 import com.devbaltasarq.pooi.core.evaluables.Command;
 import com.devbaltasarq.pooi.core.evaluables.Method;
 import com.devbaltasarq.pooi.core.evaluables.Reference;
-import com.devbaltasarq.pooi.core.evaluables.method.InterpretedMethod;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.InterpretedMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
diff --git a/src/com/devbaltasarq/pooi/core/ObjectBag.java b/src/com/devbaltasarq/pooi/core/ObjectBag.java
index ec50768..0e0dd18 100644
--- a/src/com/devbaltasarq/pooi/core/ObjectBag.java
+++ b/src/com/devbaltasarq/pooi/core/ObjectBag.java
@@ -258,6 +258,22 @@ public String getNameOrValueAsString() {
         return toret;
     }
 
+    /**
+     * Returns the number of attributes in this object
+     * @return The number of attributes, as an int.
+     */
+    public int getNumberOfAttributes() {
+        return this.attributes.size();
+    }
+
+    /**
+     * Returns the number of methods in this object
+     * @return the number of methods, as an int
+     */
+    public int getNumberOfMethods() {
+        return this.methods.size();
+    }
+
     /** @return the number of objects between this object and root, plus itself */
     public int getInheritanceLevel() {
         int toret = 1;
@@ -407,7 +423,7 @@ public String toJson()
     public Reference toReference()
     {
         Attribute[] path = this.getObjectPath();
-        ArrayList<String> toret = new ArrayList<>();
+        ArrayList<String> toret = new ArrayList<>( path.length );
 
         for(int i = 0; i < path.length; ++i) {
             toret.add( path[ i ].getName() );
@@ -594,6 +610,66 @@ public Attribute lookUpAttribute(String atrName)
         return toret;
     }
 
+    public void renameMember(String oldName, String newName) throws InterpretError
+    {
+        final Attribute attr = this.localLookUpAttribute( oldName );
+        final Method mth = this.localLookUpMethod( oldName );
+
+        if ( attr != null ) {
+            this.renameAttribute( oldName, newName );
+        }
+        else
+        if ( mth != null ) {
+            this.renameMethod( oldName, newName );
+        }
+        else {
+            throw new InterpretError( "member " + oldName + " was not found" );
+        }
+
+        return;
+    }
+
+    public void renameMethod(String oldName, String newName) throws InterpretError {
+
+    }
+
+    public void renameAttribute(String oldName, String newName) throws InterpretError {
+        final Attribute attr = this.localLookUpAttribute( oldName );
+        ObjectBag ref = null;
+
+        if ( attr != null ) {
+            try {
+                ref = attr.getReference();
+                if ( ref != null ) {
+                    ref.setName( newName );
+                    attr.setName( newName );
+                    this.attributes.remove( oldName );
+                    this.attributes.put( newName, attr );
+                } else {
+                    throw new InterpretError( "INTERNAL ERROR: reference points to void" );
+                }
+            } catch(InterpretError exc) {
+                if ( ref != null
+                  && ref.getName().equals( newName ) )
+                {
+                    ref.setName( oldName );
+                }
+
+                if ( attr != null
+                  && attr.getName().equals( newName ) )
+                {
+                    attr.setName( oldName );
+                    this.attributes.remove( newName );
+                    this.attributes.put( oldName, attr );
+                }
+
+                throw exc;
+            }
+        } else {
+            throw new InterpretError( "attribute " + oldName + " was not found" );
+        }
+    }
+
     /**
      * Returns an attribute by its name, in *this* object *only*
      * @param atrName The name of the attribute
diff --git a/src/com/devbaltasarq/pooi/core/Parser.java b/src/com/devbaltasarq/pooi/core/Parser.java
index 0acaff1..2815873 100644
--- a/src/com/devbaltasarq/pooi/core/Parser.java
+++ b/src/com/devbaltasarq/pooi/core/Parser.java
@@ -8,9 +8,9 @@
 import com.devbaltasarq.pooi.core.evaluables.literals.IntLiteral;
 import com.devbaltasarq.pooi.core.evaluables.literals.RealLiteral;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.InterpretedMethod;
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.NativeMethodSet;
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.NativeMethodStr;
+import com.devbaltasarq.pooi.core.evaluables.methods.InterpretedMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodSet;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodStr;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 import java.util.ArrayList;
diff --git a/src/com/devbaltasarq/pooi/core/Runtime.java b/src/com/devbaltasarq/pooi/core/Runtime.java
index 1e5094d..0db239e 100644
--- a/src/com/devbaltasarq/pooi/core/Runtime.java
+++ b/src/com/devbaltasarq/pooi/core/Runtime.java
@@ -9,8 +9,8 @@
 import com.devbaltasarq.pooi.core.evaluables.literals.IntLiteral;
 import com.devbaltasarq.pooi.core.evaluables.literals.RealLiteral;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.InterpretedMethod;
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.*;
+import com.devbaltasarq.pooi.core.evaluables.methods.InterpretedMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.*;
 import com.devbaltasarq.pooi.core.exceps.AttributeNotFound;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.*;
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/Method.java b/src/com/devbaltasarq/pooi/core/evaluables/Method.java
index 54c1779..58ef7bb 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/Method.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/Method.java
@@ -62,6 +62,27 @@ public static String getStringFrom(Evaluable e)
         return toret;
     }
 
+    /**
+     * Returns a list with the formal parameters of the method
+     * @return a primitive vector of String, containing the formal parameters
+     */
+    public abstract String[] getFormalParameters();
+
+    /**
+     * Returns a string with the formal parameters of the method
+     * @return a String, with the formal parameters
+     */
+    public String getFormalParametersAsString() {
+        StringBuilder toret = new StringBuilder();
+
+        for(String param: this.getFormalParameters()) {
+            toret.append( toret );
+            toret.append( ' ' );
+        }
+
+        return toret.toString().trim();
+    }
+
     /** @return Gets the body of the method as a representation in text */
     public abstract String getMethodBodyAsString();
 
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/InterpretedMethod.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java
similarity index 95%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/InterpretedMethod.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java
index 5912eb2..9346c04 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/InterpretedMethod.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/InterpretedMethod.java
@@ -1,4 +1,4 @@
-package com.devbaltasarq.pooi.core.evaluables.method;
+package com.devbaltasarq.pooi.core.evaluables.methods;
 
 import com.devbaltasarq.pooi.core.*;
 import com.devbaltasarq.pooi.core.evaluables.Command;
@@ -47,7 +47,7 @@ public void setCmds(String cmds) throws InterpretError
 
     public void setRealParams(ObjectBag self, Evaluable[] args) throws InterpretError
     {
-        String[] formalParams = this.getFormalParams();
+        String[] formalParams = this.getFormalParameters();
 
         if ( args.length != formalParams.length ) {
             throw new InterpretError( "formal and real arguments do not match" );
@@ -145,7 +145,8 @@ public Evaluable getRealParameter(String id)
         return ( this.params.get( id ) );
     }
 
-    public String[] getFormalParams()
+    @Override
+    public String[] getFormalParameters()
     {
         return this.formalParams;
     }
@@ -157,7 +158,7 @@ public String getMethodBodyAsString() {
         toret.append( "{" );
 
         // Add params
-        for(String param: this.getFormalParams()) {
+        for(String param: this.getFormalParameters()) {
             toret.append( param );
             toret.append( ' ' );
         }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/NativeMethod.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/NativeMethod.java
similarity index 96%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/NativeMethod.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/NativeMethod.java
index e2954dd..283a7ae 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/NativeMethod.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/NativeMethod.java
@@ -1,4 +1,4 @@
-package com.devbaltasarq.pooi.core.evaluables.method;
+package com.devbaltasarq.pooi.core.evaluables.methods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCopy.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCopy.java
similarity index 81%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCopy.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCopy.java
index e4465bf..8a0c1c3 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCopy.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCopy.java
@@ -1,8 +1,8 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -41,4 +41,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCreateChild.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCreateChild.java
similarity index 79%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCreateChild.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCreateChild.java
index 663555f..9a98068 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodCreateChild.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodCreateChild.java
@@ -1,8 +1,8 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -37,4 +37,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodErase.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodErase.java
similarity index 79%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodErase.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodErase.java
index 8464029..deaf2fc 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodErase.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodErase.java
@@ -1,8 +1,8 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -39,4 +39,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "attrName" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetName.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetName.java
similarity index 77%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetName.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetName.java
index 3f87fe6..60bb936 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetName.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetName.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -33,4 +33,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetPath.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetPath.java
similarity index 77%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetPath.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetPath.java
index 3c5faee..4aace4f 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodGetPath.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodGetPath.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -33,4 +33,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntAbs.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntAbs.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntAbs.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntAbs.java
index 087e954..c35c769 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntAbs.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntAbs.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 
@@ -44,4 +44,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntDivideBy.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntDivideBy.java
similarity index 89%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntDivideBy.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntDivideBy.java
index 8553a82..8e34163 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntDivideBy.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntDivideBy.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -80,4 +80,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsEqualTo.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsEqualTo.java
similarity index 87%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsEqualTo.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsEqualTo.java
index b951495..9eb80ab 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsEqualTo.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsEqualTo.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsGreaterThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsGreaterThan.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsGreaterThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsGreaterThan.java
index 736c12a..2fa2b8d 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsGreaterThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsGreaterThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsLessThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsLessThan.java
similarity index 87%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsLessThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsLessThan.java
index 4f5a5f0..ea48938 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsLessThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsLessThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsNegative.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsNegative.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsNegative.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsNegative.java
index 8dfdc98..3ea6571 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntIsNegative.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntIsNegative.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 
@@ -44,4 +44,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntMultiplyBy.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntMultiplyBy.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntMultiplyBy.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntMultiplyBy.java
index 9803200..f605a64 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntMultiplyBy.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntMultiplyBy.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -72,4 +72,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSubstract.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSubstract.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSubstract.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSubstract.java
index 88bc829..e79bd56 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSubstract.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSubstract.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -72,4 +72,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSum.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSum.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSum.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSum.java
index 6e7299d..eb128d2 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIntSum.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIntSum.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -72,4 +72,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIs.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIs.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIs.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIs.java
index c31e80f..a148ae9 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodIs.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodIs.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -49,4 +49,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "obj" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodList.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodList.java
similarity index 76%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodList.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodList.java
index 99455da..82d8205 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodList.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodList.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -33,4 +33,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodOsNow.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodOsNow.java
similarity index 85%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodOsNow.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodOsNow.java
index 5fbc87f..6e042d9 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodOsNow.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodOsNow.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectDateTime;
 
@@ -46,4 +46,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealAbs.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealAbs.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealAbs.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealAbs.java
index fb377d1..644e65c 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealAbs.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealAbs.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
 
@@ -44,4 +44,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealDivideBy.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealDivideBy.java
similarity index 89%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealDivideBy.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealDivideBy.java
index 25faeda..2df1fd1 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealDivideBy.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealDivideBy.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -80,4 +80,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsEqualTo.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsEqualTo.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsEqualTo.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsEqualTo.java
index 3d34afe..89675bf 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsEqualTo.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsEqualTo.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsGreaterThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsGreaterThan.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsGreaterThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsGreaterThan.java
index 071bc6f..3595af5 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsGreaterThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsGreaterThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsLessThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsLessThan.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsLessThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsLessThan.java
index 64afd47..55ccc7d 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsLessThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsLessThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -64,4 +64,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsNegative.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsNegative.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsNegative.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsNegative.java
index 70ee9b9..53e1f52 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealIsNegative.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealIsNegative.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
 
@@ -44,4 +44,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealMultiplyBy.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealMultiplyBy.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealMultiplyBy.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealMultiplyBy.java
index 3ac132e..9e56ab0 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealMultiplyBy.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealMultiplyBy.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -73,4 +73,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSubstract.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSubstract.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSubstract.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSubstract.java
index 7b78b5e..bb4cd4e 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSubstract.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSubstract.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -72,4 +72,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSum.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSum.java
similarity index 89%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSum.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSum.java
index 4bc1709..8292c5f 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodRealSum.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodRealSum.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectReal;
@@ -72,4 +72,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "x" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSet.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSet.java
similarity index 82%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSet.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSet.java
index 16faac9..c03ca3d 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSet.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSet.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.InterpretedMethod;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.InterpretedMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -60,4 +60,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 2;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "attrName", "obj" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSetName.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSetName.java
similarity index 70%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSetName.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSetName.java
index 43e3faa..2ea80c8 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodSetName.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodSetName.java
@@ -1,8 +1,8 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -34,20 +34,12 @@ public static ObjectBag rename(ObjectBag ref, String id, StringBuilder msg)
         final ObjectBag container = ref.getContainer();
         final String oldName = ref.getName();
 
-        // Changing name comprises two steps:
-        // Removing it then adding it again
-        // (so its own name and the reference pointing to it are in sync)
-        container.remove( ref.getName() );
-
         try {
-            ref.setName( id );
-            container.set( ref.getName(), ref );
+            container.renameMember( oldName, id );
         }
         catch(InterpretError e)
         {
-            ref.setName( oldName );
-            container.set( oldName, ref );
-
+            msg.append( "Error renaming from '" + oldName + "' to: '" + id +  "': " );
             throw e;
         }
 
@@ -58,4 +50,9 @@ public static ObjectBag rename(ObjectBag ref, String id, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "objName" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStr.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStr.java
similarity index 79%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStr.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStr.java
index 2f778c3..b3d0a66 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStr.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStr.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
@@ -35,4 +35,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrCharAt.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrCharAt.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrCharAt.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrCharAt.java
index 1073464..13c3a2c 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrCharAt.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrCharAt.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
@@ -69,4 +69,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "pos" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrConcat.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrConcat.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrConcat.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrConcat.java
index 101694c..92d1693 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrConcat.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrConcat.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -67,4 +67,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "text" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEmpty.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEmpty.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEmpty.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEmpty.java
index a211ccd..c2feba8 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEmpty.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEmpty.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -48,4 +48,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEqualTo.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEqualTo.java
similarity index 86%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEqualTo.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEqualTo.java
index c342a71..6ec7915 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsEqualTo.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsEqualTo.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -59,4 +59,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "text" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsGreaterThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsGreaterThan.java
similarity index 86%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsGreaterThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsGreaterThan.java
index 4a129de..774039a 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsGreaterThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsGreaterThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -59,4 +59,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "text" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsLessThan.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsLessThan.java
similarity index 86%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsLessThan.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsLessThan.java
index fd233d3..ee5ce76 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsLessThan.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsLessThan.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -59,4 +59,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "text" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsNumber.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsNumber.java
similarity index 85%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsNumber.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsNumber.java
index 8c1b627..149821e 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrIsNumber.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrIsNumber.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -54,4 +54,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLeft.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLeft.java
similarity index 89%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLeft.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLeft.java
index c47f1d9..e2e49a3 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLeft.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLeft.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
@@ -76,4 +76,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "pos" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLength.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLength.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLength.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLength.java
index 8ba0472..7bc1881 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrLength.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrLength.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -43,4 +43,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMays.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMays.java
similarity index 84%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMays.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMays.java
index 33433d3..838460f 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMays.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMays.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -45,4 +45,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMins.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMins.java
similarity index 84%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMins.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMins.java
index 0fac1e6..a665ba7 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrMins.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrMins.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -45,4 +45,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrRight.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrRight.java
similarity index 89%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrRight.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrRight.java
index e881f7b..e689ac7 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrRight.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrRight.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
@@ -80,4 +80,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 1;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "pos" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrSub.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrSub.java
similarity index 88%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrSub.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrSub.java
index 761a37a..56e8bd7 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrSub.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrSub.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectInt;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
@@ -71,4 +71,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 2;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[]{ "pos1", "pos2" };
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToInt.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToInt.java
similarity index 86%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToInt.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToInt.java
index 6f8cd80..6969dc5 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToInt.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToInt.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -56,4 +56,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToReal.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToReal.java
similarity index 84%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToReal.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToReal.java
index bb0f851..1af7580 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrToReal.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrToReal.java
@@ -1,9 +1,9 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -51,4 +51,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrTrim.java b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrTrim.java
similarity index 83%
rename from src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrTrim.java
rename to src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrTrim.java
index b958565..e4d5709 100644
--- a/src/com/devbaltasarq/pooi/core/evaluables/method/nativemethods/NativeMethodStrTrim.java
+++ b/src/com/devbaltasarq/pooi/core/evaluables/methods/nativemethods/NativeMethodStrTrim.java
@@ -1,10 +1,10 @@
-package com.devbaltasarq.pooi.core.evaluables.method.nativemethods;
+package com.devbaltasarq.pooi.core.evaluables.methods.nativemethods;
 
 import com.devbaltasarq.pooi.core.Evaluable;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.literals.StrLiteral;
-import com.devbaltasarq.pooi.core.evaluables.method.NativeMethod;
+import com.devbaltasarq.pooi.core.evaluables.methods.NativeMethod;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectStr;
 
@@ -45,4 +45,9 @@ public ObjectBag doIt(ObjectBag ref, Evaluable[] params, StringBuilder msg)
     public int getNumParams() {
         return 0;
     }
+
+    @Override
+    public String[] getFormalParameters() {
+        return new String[ 0 ];
+    }
 }
diff --git a/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java b/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java
index 1ea4ea1..1ed9d0c 100644
--- a/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java
+++ b/src/com/devbaltasarq/pooi/core/objs/ObjectOs.java
@@ -1,6 +1,6 @@
 package com.devbaltasarq.pooi.core.objs;
 
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.NativeMethodOsNow;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodOsNow;
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 
 /**
diff --git a/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java b/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java
index 5924b14..a376400 100644
--- a/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java
+++ b/src/com/devbaltasarq/pooi/core/objs/ObjectParent.java
@@ -10,10 +10,10 @@
 package com.devbaltasarq.pooi.core.objs;
 
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.NativeMethodStr;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodStr;
 import com.devbaltasarq.pooi.core.ObjectBag;
 import com.devbaltasarq.pooi.core.Reserved;
-import com.devbaltasarq.pooi.core.evaluables.method.nativemethods.*;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.*;
 
 /**
  * This is "Object" the parent for all objects
diff --git a/src/com/devbaltasarq/pooi/res/addAttribute.png b/src/com/devbaltasarq/pooi/res/addAttribute.png
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delta 518
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diff --git a/src/com/devbaltasarq/pooi/res/addMethod.png b/src/com/devbaltasarq/pooi/res/addMethod.png
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GIT binary patch
delta 486
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delta 600
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deleted file mode 100644
index a3068748413cadadd472d2c6c595e316bc2e4047..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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GIT binary patch
delta 165
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new file mode 100644
index 0000000000000000000000000000000000000000..210769c3f9a7b75255841c10a7ecabf4e9cda61f
GIT binary patch
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diff --git a/src/com/devbaltasarq/pooi/res/execute.png b/src/com/devbaltasarq/pooi/res/execute.png
new file mode 100644
index 0000000000000000000000000000000000000000..cec151f42a1eb55c9b0ff9bbd5d083519af9c11d
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/src/com/devbaltasarq/pooi/ui/Inspector.java b/src/com/devbaltasarq/pooi/ui/Inspector.java
index 7d693bc..25cb43c 100644
--- a/src/com/devbaltasarq/pooi/ui/Inspector.java
+++ b/src/com/devbaltasarq/pooi/ui/Inspector.java
@@ -5,8 +5,11 @@
 import com.devbaltasarq.pooi.core.Runtime;
 import com.devbaltasarq.pooi.core.evaluables.Attribute;
 import com.devbaltasarq.pooi.core.evaluables.Method;
-import com.devbaltasarq.pooi.core.exceps.InterpretError;
-import com.devbaltasarq.pooi.core.objs.ValueObject;
+import com.devbaltasarq.pooi.core.evaluables.ParentAttribute;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodList;
+import com.devbaltasarq.pooi.core.evaluables.methods.nativemethods.NativeMethodStr;
+import com.devbaltasarq.pooi.core.objs.ObjectParent;
+import com.devbaltasarq.pooi.core.objs.ObjectRoot;
 
 import javax.swing.*;
 import javax.swing.border.EmptyBorder;
@@ -16,6 +19,7 @@
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
 import java.net.URL;
+import java.util.HashSet;
 
 /**
  * Created by Baltasar on 30/04/2016.
@@ -24,8 +28,11 @@ public class Inspector extends JDialog {
     public static final String EtqIconCopy = "com/devbaltasarq/pooi/res/copy.png";
     public static final String EtqIconAddMethod = "com/devbaltasarq/pooi/res/addMethod.png";
     public static final String EtqIconAddAttribute = "com/devbaltasarq/pooi/res/addAttribute.png";
+    public static final String EtqIconExecute = "com/devbaltasarq/pooi/res/execute.png";
+    public static final String EtqIconDelete = "com/devbaltasarq/pooi/res/delete.png";
 
     public Inspector(VisualEngine parent, ObjectBag obj) {
+        this.beingBuilt = true;
         try {
             this.rt = Runtime.getRuntime();
             this.objRoot = rt.getAbsoluteParent();
@@ -40,6 +47,8 @@ public Inspector(VisualEngine parent, ObjectBag obj) {
         this.setIconImage( parent.getIconImage() );
         this.setFont( this.visualEngine.getFont() );
         this.build();
+        this.beingBuilt = false;
+        this.setVisible( true );
     }
 
     /** Retries icons from jar for future use */
@@ -57,6 +66,12 @@ private void buildIcons()
             url = this.getClass().getClassLoader().getResource( EtqIconAddAttribute );
             this.iconAddAttribute = new ImageIcon( url );
 
+            url = this.getClass().getClassLoader().getResource( EtqIconExecute );
+            this.iconExecute = new ImageIcon( url );
+
+            url = this.getClass().getClassLoader().getResource( EtqIconDelete );
+            this.iconDelete = new ImageIcon( url );
+
         } catch(Exception exc)
         {
             this.visualEngine.makeOutput( "\n[WARNING: failed to retrieve icons from jar]\n\n" );
@@ -80,13 +95,7 @@ public void actionPerformed(ActionEvent e)
         this.add( pnlClose, BorderLayout.PAGE_END );
     }
 
-    private void buildActionArea() {
-        // Create a box layout in the center
-        this.pnlAction = new JPanel();
-        JScrollPane scroll = new JScrollPane( this.pnlAction );
-        this.pnlAction.setLayout( new BoxLayout( this.pnlAction, BoxLayout.PAGE_AXIS ) );
-        this.add( scroll, BorderLayout.CENTER );
-
+    private void buildBasicAttrsPanel() {
         // Add panel for object's name
         JPanel pnlName = new JPanel();
         pnlName.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
@@ -99,16 +108,48 @@ private void buildActionArea() {
         pnlName.add( edObjectName );
         this.pnlAction.add( pnlName );
         this.pnlAction.add( Box.createVerticalGlue() );
-        edObjectName.addActionListener(new ActionListener() {
+        this.edObjectName.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent actionEvent) {
-                Inspector.this.visualEngine.execute(
-                            Inspector.this.getObj().getPath() + " rename \"" + edObjectName.getText() + "\"");
-                Inspector.this.updateObjectName();
+                if ( !Inspector.this.beingBuilt ) {
+                    Inspector.this.visualEngine.execute(
+                        Inspector.this.getObj().getPath() + " rename \"" + edObjectName.getText() + "\"" );
+                    Inspector.this.updateObjectBasicAttributes();
+                }
             }
         });
 
-        // Add buttons for management
+        // Add panel for parent attribute
+        if ( !( this.getObj() instanceof ObjectParent ) ) {
+            JPanel pnlAttrParent = new JPanel();
+            pnlAttrParent.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
+            pnlAttrParent.setLayout( new BoxLayout( pnlAttrParent, BoxLayout.LINE_AXIS ) );
+            JLabel lblParentAttributeName = new JLabel( "Parent" );
+            this.cbParent = new JComboBox( this.availableObjectsNames );
+            ( (JLabel) this.cbParent.getRenderer() ).setHorizontalAlignment( JLabel.RIGHT );
+            ( (JTextField) this.cbParent.getEditor().getEditorComponent() ).setHorizontalAlignment( JTextField.RIGHT  );
+            this.cbParent.setFont( this.visualEngine.getFont() );
+            this.cbParent.setEditable( true );
+            this.cbParent.getModel().setSelectedItem( this.getObj().getParentObject().getNameOrValueAsString() );
+            pnlAttrParent.add( lblParentAttributeName );
+            pnlAttrParent.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+            pnlAttrParent.add( this.cbParent );
+            this.pnlAction.add( pnlAttrParent );
+            this.pnlAction.add( Box.createVerticalGlue() );
+            this.cbParent.addActionListener(new ActionListener() {
+                @Override
+                public void actionPerformed(ActionEvent actionEvent) {
+                    if ( !Inspector.this.beingBuilt ) {
+                        Inspector.this.visualEngine.execute(
+                            Inspector.this.getObj().getPath() + ".parent = " + cbParent.getSelectedItem() );
+                        Inspector.this.updateObjectBasicAttributes();
+                    }
+                }
+            });
+        }
+    }
+
+    private void buildManagementButtonsPanel() {
         JPanel pnlButtons = new JPanel();
         pnlButtons.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
         pnlButtons.setLayout( new BoxLayout( pnlButtons, BoxLayout.LINE_AXIS ) );
@@ -116,15 +157,12 @@ public void actionPerformed(ActionEvent actionEvent) {
         btAddAttribute.setToolTipText( "Add attribute" );
         JButton btAddMethod = new JButton( this.iconAddMethod );
         btAddMethod.setToolTipText( "Add method" );
-        JButton btRename = new JButton( "Ren" );
         JButton btCopy = new JButton( this.iconCopy );
         btCopy.setToolTipText( "Copy this object" );
         pnlButtons.add( btAddAttribute );
         pnlButtons.add( Box.createHorizontalGlue() );
         pnlButtons.add( btAddMethod );
         pnlButtons.add( Box.createHorizontalGlue() );
-        pnlButtons.add( btRename );
-        pnlButtons.add( Box.createHorizontalGlue() );
         pnlButtons.add( btCopy );
         this.pnlAction.add( pnlButtons );
         this.pnlAction.add( Box.createVerticalGlue() );
@@ -132,157 +170,195 @@ public void actionPerformed(ActionEvent actionEvent) {
         btAddAttribute.addActionListener( new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                Inspector.this.addAttribute();
+                String attrName = "attr" + ( Inspector.this.getObj().getNumberOfAttributes()  + 1 );
+                Inspector.this.visualEngine.execute( getObj().getPath() + "." + attrName + " = 0" );
+                Inspector.this.addAttributePanel( getObj().lookUpAttribute( attrName ) );
+                Inspector.this.pack();
             }
         } );
 
         btAddMethod.addActionListener( new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                Inspector.this.addMethod();
+                String mthName = "mth" + ( Inspector.this.getObj().getNumberOfMethods() + 1 );
+                Inspector.this.visualEngine.execute( getObj().getPath() + "." + mthName + " = {:}" );
+                Inspector.this.addMethodPanel( getObj().localLookUpMethod( mthName ) );
+                Inspector.this.pack();
             }
         } );
 
-        btRename.addActionListener( new ActionListener() {
+        btCopy.addActionListener( new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                Inspector.this.renameObject();
+                Inspector.this.copyObject();
             }
         } );
+    }
 
-        btCopy.addActionListener( new ActionListener() {
+    private void addAttributePanel(Attribute attr) {
+        ObjectBag objDest = attr.getReference();
+        JPanel panel = new JPanel();
+        panel.setBorder(new EmptyBorder( 10, 10, 10, 10 ) );
+        panel.setLayout( new BoxLayout( panel, BoxLayout.LINE_AXIS ) );
+
+        JButton btDelete = new JButton( this.iconDelete );
+        btDelete.setToolTipText( "Delete attribute" );
+        JComboBox cbContents = new JComboBox( this.availableObjectsNames );
+        ( (JLabel) cbContents.getRenderer() ).setHorizontalAlignment( JLabel.RIGHT );
+        ( (JTextField) cbContents.getEditor().getEditorComponent() ).setHorizontalAlignment( JTextField.RIGHT  );
+        cbContents.setFont( this.visualEngine.getFont() );
+        cbContents.setEditable( true );
+        cbContents.getModel().setSelectedItem( objDest.getNameOrValueAsString() );
+        JTextField edName = new JTextField( attr.getName() );
+
+        panel.add( btDelete );
+        panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+        panel.add( edName );
+        panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+        panel.add( cbContents );
+        this.pnlAttributes.add( panel );
+        this.pnlAttributes.add( Box.createVerticalGlue() );
+
+        edName.addActionListener( new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                Inspector.this.copyObject();
+                if ( !Inspector.this.beingBuilt ) {
+                    Inspector.this.visualEngine.execute( getObj().getPath()
+                                    + "." + attr.getName() + " rename \"" + edName.getText() + "\"" );
+                    edName.setText( attr.getName() );
+                }
             }
         } );
 
-        // Add controls for each attribute
-        final Attribute[] attrs = this.rt.getRoot().getAttributes();
-        final String[] objsNames = new String[ attrs.length ];
-        for(int i = 0; i < attrs.length; ++i) {
-            objsNames[ i ] = attrs[ i ].getName();
-        }
-
-        for(Attribute atr: this.getObj().getAttributes()) {
-            ObjectBag objDest = atr.getReference();
-            JPanel panel = new JPanel();
-            panel.setBorder(new EmptyBorder( 10, 10, 10, 10 ) );
-            panel.setLayout( new BoxLayout( panel, BoxLayout.LINE_AXIS ) );
-            JComboBox cbContents = new JComboBox( objsNames );
-            ( (JLabel)cbContents.getRenderer() ).setHorizontalAlignment( JLabel.RIGHT );
-            cbContents.setFont( this.visualEngine.getFont() );
-            cbContents.setEditable( true );
-            cbContents.getModel().setSelectedItem( objDest.getNameOrValueAsString() );
-            JLabel lblName = new JLabel( atr.getName() );
-
-            panel.add( lblName );
-            panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
-            panel.add( cbContents );
-            this.pnlAction.add( panel );
-            this.pnlAction.add( Box.createVerticalGlue() );
-            lblName.addMouseListener(new MouseListener() {
-                @Override
-                public void mouseClicked(MouseEvent mouseEvent) {
+        cbContents.addActionListener( new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent evt) {
+                if ( !Inspector.this.beingBuilt ) {
+                    visualEngine.execute( obj.getPath() + "." + edName.getText() + " = " + cbContents.getModel().getSelectedItem() );
+                }
+            }
+        } );
 
+        btDelete.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                if ( !Inspector.this.beingBuilt ) {
+                    visualEngine.execute( obj.getPath() + " erase \"" + attr.getName() + "\"" );
+                    pnlAttributes.remove( panel );
+                    Inspector.this.pack();
                 }
+            }
+        });
+    }
 
-                @Override
-                public void mousePressed(MouseEvent mouseEvent) {
+    private void buildAttributesManagementPanel() {
+        HashSet<String> attrIds = new HashSet<>( this.getObj().getNumberOfMethods() );
 
-                }
-                @Override
-                public void mouseReleased(MouseEvent mouseEvent) {
-                    Inspector.this.launchFieldInspection( atr.getName() );
-                }
+        this.pnlAttributes = new JPanel();
+        JScrollPane scroll = new JScrollPane( this.pnlAttributes );
+        this.pnlAttributes.setLayout( new BoxLayout( this.pnlAttributes, BoxLayout.PAGE_AXIS ) );
+        this.pnlAction.add( scroll );
+        this.pnlAction.add( Box.createVerticalGlue() );
 
-                @Override
-                public void mouseEntered(MouseEvent mouseEvent) {
+        for(Attribute attr: this.getObj().getAttributes()) {
+            if ( attr instanceof ParentAttribute ) {
+                continue;
+            }
+
+            String attrName = attr.getName();
 
+            if ( attrIds.contains( attrName ) ) {
+                continue;
+            } else {
+                attrIds.add( attrName );
+            }
+
+           this.addAttributePanel( attr );
+        }
+    }
+
+    private void addMethodPanel(Method mth) {
+        String mthName = mth.getName();
+        JPanel panel = new JPanel();
+        panel.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
+        panel.setLayout( new BoxLayout( panel, BoxLayout.LINE_AXIS ) );
+
+        JButton btDelete = new JButton( this.iconDelete );
+        btDelete.setToolTipText( "Delete method" );
+        JButton btExecute = new JButton( this.iconExecute );
+        btExecute.setToolTipText( "Execute method" );
+        JTextField edName = new JTextField( mthName );
+        JTextField edContents = new JTextField( mth.getMethodBodyAsString() );
+        edContents.setHorizontalAlignment( JTextField.RIGHT );
+        panel.add( btExecute );
+        panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+        panel.add( btDelete );
+        panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+        panel.add( edName );
+        panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
+        panel.add( edContents );
+        this.pnlMethods.add( panel );
+        this.pnlMethods.add( Box.createVerticalGlue() );
+
+        edName.addActionListener( new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if ( !Inspector.this.beingBuilt ) {
+                    //Inspector.this.visualEngine.execute( getObj().getPath() + "." + edName.getText() + " = "  );
                 }
+            }
+        } );
 
-                @Override
-                public void mouseExited(MouseEvent mouseEvent) {
+        edContents.addActionListener( new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if ( !Inspector.this.beingBuilt ) {
+                    visualEngine.execute( getObj().getPath() + "." + edName.getText() + " = " + edContents.getText() );
+                }
+            }
+        } );
 
+        btExecute.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                if ( !Inspector.this.beingBuilt ) {
+                    Inspector.this.launchMethodExecution( mth.getName() );
                 }
-            });
+            }
+        });
 
-            cbContents.addActionListener( new ActionListener() {
-                @Override
-                public void actionPerformed(ActionEvent evt) {
-                    visualEngine.execute( obj.getPath() + "." + lblName.getText() + " = " + (String) cbContents.getModel().getSelectedItem() );
+        btDelete.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                if ( !Inspector.this.beingBuilt ) {
+                    visualEngine.execute( obj.getPath() + " erase \"" + mth.getName() + "\"" );
+                    pnlAttributes.remove( panel );
+                    Inspector.this.pack();
                 }
-            } );
-        }
+            }
+        });
+    }
+
+    private void buildMethodsManagementPanel() {
+        this.pnlMethods = new JPanel();
+        JScrollPane scroll = new JScrollPane( this.pnlMethods );
+        this.pnlMethods.setLayout( new BoxLayout( this.pnlMethods, BoxLayout.PAGE_AXIS ) );
+        this.pnlAction.add( scroll );
+        this.pnlAction.add( Box.createVerticalGlue() );
 
-        // Add controls for each local method, as well as inherited ones
+        HashSet<String> mthIds = new HashSet<>( this.getObj().getNumberOfMethods() );
         ObjectBag obj = this.getObj();
         do {
             for (Method mth : obj.getLocalMethods()) {
-                JPanel panel = new JPanel();
-                panel.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
-                panel.setLayout( new BoxLayout( panel, BoxLayout.LINE_AXIS ) );
-                JLabel lblName = new JLabel( mth.getName() + "()" );
-                JTextField edContents = new JTextField( mth.getMethodBodyAsString() );
-                edContents.setHorizontalAlignment( JTextField.RIGHT );
-                panel.add( lblName );
-                panel.add( Box.createRigidArea( new Dimension( 10, 0 ) ) );
-                panel.add( edContents );
-                this.pnlAction.add( panel );
-                this.pnlAction.add( Box.createVerticalGlue() );
-                lblName.addMouseListener( new MouseListener() {
-                    @Override
-                    public void mouseClicked(MouseEvent mouseEvent) {
-
-                    }
-
-                    @Override
-                    public void mousePressed(MouseEvent mouseEvent) {
-
-                    }
-
-                    @Override
-                    public void mouseReleased(MouseEvent mouseEvent) {
-                        Inspector.this.launchMethodExecution( lblName.getText() );
-                    }
-
-                    @Override
-                    public void mouseEntered(MouseEvent mouseEvent) {
-
-                    }
-
-                    @Override
-                    public void mouseExited(MouseEvent mouseEvent) {
-
-                    }
-                } );
-
-                edContents.addMouseListener( new MouseListener() {
-                    @Override
-                    public void mouseClicked(MouseEvent e) {
-
-                    }
-
-                    @Override
-                    public void mousePressed(MouseEvent e) {
-
-                    }
+                String mthName = mth.getName();
 
-                    @Override
-                    public void mouseReleased(MouseEvent e) {
-                        Inspector.this.changeMethod( lblName.getText(), edContents.getText() );
-                    }
-
-                    @Override
-                    public void mouseEntered(MouseEvent e) {
-
-                    }
-
-                    @Override
-                    public void mouseExited(MouseEvent e) {
+                if ( mthIds.contains( mthName ) ) {
+                    continue;
+                } else {
+                    mthIds.add( mthName );
+                }
 
-                    }
-                } );
+                this.addMethodPanel( mth );
             }
 
             obj = obj.getParentObject();
@@ -290,39 +366,63 @@ public void mouseExited(MouseEvent e) {
               && obj != null );
     }
 
+    private void buildActionArea() {
+        // Create a box layout in the center
+        this.pnlAction = new JPanel();
+        JScrollPane scroll = new JScrollPane( this.pnlAction );
+        this.pnlAction.setLayout( new BoxLayout( this.pnlAction, BoxLayout.PAGE_AXIS ) );
+        this.add( scroll, BorderLayout.CENTER );
+
+        this.buildBasicAttrsPanel();
+        this.buildManagementButtonsPanel();
+        this.buildAttributesManagementPanel();
+        this.buildMethodsManagementPanel();
+    }
+
     private void build() {
+        this.prepareAvailableObjectsNames();
+
+        // Build
         this.setLayout( new BorderLayout( 5, 5 ) );
-        this.setLocationByPlatform( true  );
         this.buildIcons();
         this.buildCloseButton();
         this.buildActionArea();
 
+        // Configure
         this.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
-        this.setMinimumSize( new Dimension( 300, 200 ) );
         this.setModal( true );
         this.pack();
-        this.updateObjectName();
-        this.setVisible( true );
-    }
+        this.updateObjectBasicAttributes();
+        this.setMinimumSize( new Dimension( 300, 200 ) );
 
-    private void updateObjectName() {
-        this.setTitle( this.getObj().getPath() + " - Inspector" );
-        this.edObjectName.setText( this.getObj().getName() );
+        // Resize and put it in its location
+        Point p = new Point( this.visualEngine.getLocation() );
+        p.x += ( this.visualEngine.getWidth() - this.getWidth() ) / 2;
+        p.y += ( this.visualEngine.getHeight() - this.getHeight() ) / 2;
+        this.setLocation( p );
     }
 
-    private void launchFieldInspection(String id) {
-        visualEngine.execute( this.obj.getPath() + "." + id );
-    }
+    private void updateObjectBasicAttributes() {
+        ObjectBag obj = this.getObj();
+        ObjectBag objParent = this.getObj().getParentObject();
+
+        if ( obj != null ) {
+            this.setTitle( this.getObj().getPath() + " - Inspector" );
+            this.edObjectName.setText( this.getObj().getName() );
+        } else {
+            this.setTitle( "Inspector" );
+        }
 
-    private void addAttribute() {
-        addAttribute( this, this.visualEngine, this.getObj() );
-        this.setVisible( false );
+        if ( objParent != null
+          && !( obj instanceof ObjectParent ) )
+        {
+            this.cbParent.setSelectedItem( objParent.getName() );
+        }
     }
 
     private void launchMethodExecution(String methodName)
     {
         String arguments = "";
-        methodName = methodName.substring( 0, methodName.length() - 2 );
         Method mth = this.getObj().lookUpMethod( methodName );
 
         if ( mth.getNumParams() > 0 ) {
@@ -345,35 +445,8 @@ private void launchMethodExecution(String methodName)
         }
     }
 
-    private void addMethod() {
-        addMethod( this, this.visualEngine, this.getObj() );
-    }
-
-    private void changeMethod(String methodName, String body) {
-        changeMethod( this, this.visualEngine, this.getObj(), methodName, body );
-        this.setVisible( false );
-    }
-
-    private void renameObject() {
-        String newName = (String) JOptionPane.showInputDialog(
-                this,
-                "New object's name:",
-                AppInfo.Name,
-                JOptionPane.PLAIN_MESSAGE,
-                null,
-                null,
-                "x" );
-
-        if ( newName != null ) {
-            newName = newName.trim();
-            if ( newName.length() > 0 ) {
-                visualEngine.execute( obj.getPath() + " rename \"" + newName + '\"' );
-                this.setVisible( false );
-            }
-        }
-    }
-
-    private void copyObject() {
+    private void copyObject()
+    {
         String newName = (String) JOptionPane.showInputDialog(
                 this,
                 "New object's name:",
@@ -381,7 +454,7 @@ private void copyObject() {
                 JOptionPane.PLAIN_MESSAGE,
                 null,
                 null,
-                "x" );
+                "obj" + ( visualEngine.getInterpreter().getRuntime().getRoot().getNumberOfAttributes() + 1 ) );
 
         if ( newName != null ) {
             newName = newName.trim();
@@ -423,7 +496,7 @@ public static void addMethod(Window frame, VisualEngine visualEngine, ObjectBag
                 JOptionPane.PLAIN_MESSAGE,
                 null,
                 null,
-                "x" );
+                "f" );
 
         if ( mthName != null ) {
             mthName = mthName.trim();
@@ -457,15 +530,32 @@ public static void changeMethod(Window frame, VisualEngine visualEngine, ObjectB
         return;
     }
 
+    public String[] prepareAvailableObjectsNames() {
+        final Attribute[] attrs = this.rt.getRoot().getAttributes();
+        this.availableObjectsNames = new String[ attrs.length ];
+        for(int i = 0; i < attrs.length; ++i) {
+            this.availableObjectsNames[ i ] = attrs[ i ].getName();
+        }
+
+        return this.availableObjectsNames;
+    }
+
     private ObjectBag obj;
     private Runtime rt;
     private ObjectBag objRoot;
+    private String[] availableObjectsNames;
+    private Boolean beingBuilt;
 
     private JButton btClose;
     private JTextField edObjectName;
+    private JComboBox cbParent;
     private JPanel pnlAction;
+    private JPanel pnlAttributes;
+    private JPanel pnlMethods;
     private ImageIcon iconCopy;
     private ImageIcon iconAddMethod;
     private ImageIcon iconAddAttribute;
+    private ImageIcon iconDelete;
+    private ImageIcon iconExecute;
     private VisualEngine visualEngine;
 }
diff --git a/src/com/devbaltasarq/pooi/ui/VisualEngine.java b/src/com/devbaltasarq/pooi/ui/VisualEngine.java
index 9e56fce..c2779f4 100644
--- a/src/com/devbaltasarq/pooi/ui/VisualEngine.java
+++ b/src/com/devbaltasarq/pooi/ui/VisualEngine.java
@@ -9,6 +9,7 @@
 import com.devbaltasarq.pooi.core.exceps.InterpretError;
 import com.devbaltasarq.pooi.core.objs.ObjectRoot;
 import com.devbaltasarq.pooi.core.objs.SysObject;
+import com.sun.deploy.config.Platform;
 
 import javax.swing.*;
 import javax.swing.event.TreeSelectionEvent;
@@ -19,6 +20,7 @@
 import javax.swing.tree.TreePath;
 import java.awt.*;
 import java.awt.event.*;
+import java.io.File;
 import java.net.URL;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -43,6 +45,7 @@ public class VisualEngine extends JFrame {
     /** Creates new form VisualEngine */
     public VisualEngine()
     {
+        this.currentDir = new File( Platform.get().getUserHome() );
         this.build();
         this.input.requestFocusInWindow();
     }
@@ -599,10 +602,13 @@ private void onLoadSession()
                     "Transcript text files", "txt"
         );
         fileSelector.setFileFilter( filter );
+        fileSelector.setCurrentDirectory( this.currentDir );
 
         // Show
         if ( fileSelector.showOpenDialog(this) == JFileChooser.APPROVE_OPTION )
         {
+            this.currentDir = fileSelector.getCurrentDirectory();
+
             // Load
             output.append( "\n" +
                     interpreter.loadSession( fileSelector.getSelectedFile().getAbsolutePath() )
@@ -627,10 +633,12 @@ private void onSaveTranscript()
                 new FileNameExtensionFilter( 
                     "Transcript text files", "txt"
         );
-        fileSelector.setFileFilter( filter );                
+        fileSelector.setFileFilter( filter );
+        fileSelector.setCurrentDirectory( this.currentDir  );
 
         // Show
         if ( fileSelector.showSaveDialog( this ) == JFileChooser.APPROVE_OPTION ) {
+            this.currentDir = fileSelector.getCurrentDirectory();
             interpreter.activateTranscript(
                     fileSelector.getSelectedFile().getAbsolutePath()
             );
@@ -811,7 +819,7 @@ private void onNewObject(String objPath) {
                 JOptionPane.PLAIN_MESSAGE,
                 this.iconNew,
                 null,
-                "obj" );
+                "obj" + ( this.getInterpreter().getRuntime().getRoot().getNumberOfAttributes() + 1 ) );
 
         if ( s != null ) {
             this.createNewObject( objPath, s );
@@ -1043,6 +1051,10 @@ public void makeOutput(String msg)
     {
         this.output.append( msg );
     }
+
+    public Interpreter getInterpreter() {
+        return this.interpreter;
+    }
     
     private JDialog dlgFont;
     private JComboBox<String> input;
@@ -1067,4 +1079,5 @@ public void makeOutput(String msg)
     private Interpreter interpreter = null;
 
     private static boolean rebuildingTree = false;
+    private File currentDir;
 }