diff --git a/docs/samples/generic_plot.kibot.yaml b/docs/samples/generic_plot.kibot.yaml
index 2a924e490..63f44906a 100644
--- a/docs/samples/generic_plot.kibot.yaml
+++ b/docs/samples/generic_plot.kibot.yaml
@@ -28,6 +28,8 @@ preflight:
   annotate_power: true
   # [dict|list(dict)=[]] Checks to apply to the schematic fields.
   # You can define conditions that must be met by the fields.
+  # The checks are applied to every component in the schematic.
+  # When an error is hit execution is stopped.
   # One use is to check that all components are suitable for a temperature range.
   # In this case a field must declare the temperature range.
   check_fields:
diff --git a/docs/source/configuration/sup_preflights.rst b/docs/source/configuration/sup_preflights.rst
index 473319e99..e01e71d2c 100644
--- a/docs/source/configuration/sup_preflights.rst
+++ b/docs/source/configuration/sup_preflights.rst
@@ -33,20 +33,32 @@ Supported preflights
 
    -  **check_fields** :index:`: <pair: preflight - check_fields; check_fields>` [:ref:`dict <dict>` | :ref:`list(dict) <list(dict)>`] (default: ``[]``) Checks to apply to the schematic fields.
       You can define conditions that must be met by the fields.
+      The checks are applied to every component in the schematic.
+      When an error is hit execution is stopped.
       One use is to check that all components are suitable for a temperature range.
       In this case a field must declare the temperature range.
 
       -  Valid keys:
 
          -  **field** :index:`: <pair: preflight - check_fields - check_fields; field>` [:ref:`string <string>`] (default: ``''``) Name of field to check.
-         -  **regex** :index:`: <pair: preflight - check_fields - check_fields; regex>` [:ref:`string <string>`] (default: ``''``) Regular expression to match the field content.
+         -  **regex** :index:`: <pair: preflight - check_fields - check_fields; regex>` [:ref:`string <string>`] (default: ``''``) Regular expression to match the field content. Note that technically we do a search, not a match.
          -  *regexp* :index:`: <pair: preflight - check_fields - check_fields; regexp>` Alias for regex.
          -  ``numeric_condition`` :index:`: <pair: preflight - check_fields - check_fields; numeric_condition>` [:ref:`string <string>`] (default: ``'none'``) (choices: ">", ">=", "<", "<=", "=", "none") Convert the group 1 of the regular expression to a number and apply this operation
             to the *numeric_reference* value.
          -  ``numeric_reference`` :index:`: <pair: preflight - check_fields - check_fields; numeric_reference>` [:ref:`number <number>`] (default: ``0``) Value to compare using *numeric_condition*.
-         -  ``severity`` :index:`: <pair: preflight - check_fields - check_fields; severity>` [:ref:`string <string>`] (default: ``'error'``) (choices: "error", "warning", "info", "skip") If the regex matches what we do.
+         -  ``severity`` :index:`: <pair: preflight - check_fields - check_fields; severity>` [:ref:`string <string>`] (default: ``'error'``) (choices: "error", "warning", "info", "skip", "continue") Default severity applied to various situations.
             The *error* will stop execution.
-         -  ``skip_if_missing`` :index:`: <pair: preflight - check_fields - check_fields; skip_if_missing>` [:ref:`boolean <boolean>`] (default: ``true``) If the field is missing we just continue. Otherwise we apply the *severity*.
+            The *warning* and *info* will generate a message and continue with the rest of the tests.
+            In the *skip* case we jump to the next component.
+            Use *continue* to just skip this test and apply the rest.
+         -  ``severity_fail_condition`` :index:`: <pair: preflight - check_fields - check_fields; severity_fail_condition>` [:ref:`string <string>`] (default: ``'default'``) (choices: "error", "warning", "info", "skip", "continue", "default") What to do when the *numeric_condition* isn't met.
+            Default means to use the *severity* option.
+         -  ``severity_missing`` :index:`: <pair: preflight - check_fields - check_fields; severity_missing>` [:ref:`string <string>`] (default: ``'continue'``) (choices: "error", "warning", "info", "skip", "continue", "default") What to do if the field isn't defined.
+            Default means to use the *severity* option.
+         -  ``severity_no_match`` :index:`: <pair: preflight - check_fields - check_fields; severity_no_match>` [:ref:`string <string>`] (default: ``'default'``) (choices: "error", "warning", "info", "skip", "continue", "default") What to do when the regex doesn't match.
+            Default means to use the *severity* option.
+         -  ``severity_no_number`` :index:`: <pair: preflight - check_fields - check_fields; severity_no_number>` [:ref:`string <string>`] (default: ``'default'``) (choices: "error", "warning", "info", "skip", "continue", "default") What to do if we don't get a number for a *numeric_condition*.
+            Default means to use the *severity* option.
 
 
    -  **check_zone_fills** :index:`: <pair: preflight - check_zone_fills; check_zone_fills>` [:ref:`boolean <boolean>`] Zones are filled before doing any operation involving PCB layers.