diff --git a/docs/source/advanced_config.rst b/docs/source/advanced_config.rst
index 4fd4b74e..0e8a04d1 100644
--- a/docs/source/advanced_config.rst
+++ b/docs/source/advanced_config.rst
@@ -82,18 +82,22 @@ import your grab configuration to find out where it put the source.
 
     if __name__ == '__main__':
         with BuildConfig(project_label='<project_label>') as state:
-            grab_folder(state, src=grab_config.source_root),
+            grab_folder(state, src=my_grab_config.source_root),
 
 
 Housekeeping
 ============
 
-Fab will remove old files from the prebuilds folder. It will remove all prebuild files that are not part of the current build by default.
+You can add a :func:`~fab.steps.cleanup_prebuilds.cleanup_prebuilds`
+step, where you can explicitly control how long to keep prebuild files.
+This may be useful, for example, if you often switch between two versions
+of your code and want to keep the prebuild speed benefits when building
+both.
 
-If you add a :func:`~fab.steps.cleanup_prebuilds.cleanup_prebuilds` step, you
-can keep prebuild files for longer. This may be useful, for example, if you
-often switch between two versions of your code and want to keep the prebuild
-speed benefits when building both.
+If you do not add your own cleanup_prebuild step, Fab will
+automatically run a default step which will remove old files from the
+prebuilds folder. It will remove all prebuild files that are not part of
+the current build by default.
 
 
 Sharing Prebuilds
diff --git a/docs/source/environment.rst b/docs/source/environment.rst
index 8747efd9..ef5b40ee 100644
--- a/docs/source/environment.rst
+++ b/docs/source/environment.rst
@@ -3,11 +3,11 @@
 Environment
 ***********
 
-Fab requires a suitible Python environment in which to run. This page outlines
+Fab requires a suitable Python environment in which to run. This page outlines
 some routes to achieving such an environment.
 
 This page contains general instructions, there are additional instructions for
-:ref:`Met Office<MetOffice>` users elsewhere.
+:ref:`Met Office<MetOfficeUsage>` users elsewhere.
 
 
 .. _Requirements:
diff --git a/docs/source/writing_config.rst b/docs/source/writing_config.rst
index 9795a8cb..aaab8471 100644
--- a/docs/source/writing_config.rst
+++ b/docs/source/writing_config.rst
@@ -236,14 +236,14 @@ However preprocessing C currently requires a preceding step called the
 into the C code so Fab is able to deduce which inclusions are user code and
 which are system code. This allows system dependencies to be ignored.
 
-See also :ref:`Advanced C Code<Advanced C Code>`
+See also :ref:`Advanced C Code<C Pragma Injector>`
 
 
 Further Reading
 ===============
 
 More advanced configuration topics are discussed in
-:ref:`Advanced Configuration`.
+:ref:`Advanced Config`.
 
 You can see more complicated configurations in the
 `developer testing directory <https://github.com/metomi/fab/tree/master/run_configs>`_.
diff --git a/source/fab/steps/compile_fortran.py b/source/fab/steps/compile_fortran.py
index 41c4e380..f84e71fa 100644
--- a/source/fab/steps/compile_fortran.py
+++ b/source/fab/steps/compile_fortran.py
@@ -67,7 +67,7 @@ def compile_fortran(config: BuildConfig, common_flags: Optional[List[str]] = Non
         A list of :class:`~fab.build_config.AddFlags`, defining flags to be included in the command line call
         for selected files.
     :param source:
-        An :class:`~fab.artefacts.ArtefactsGetter` which give us our c files to process.
+        An :class:`~fab.artefacts.ArtefactsGetter` which gives us our Fortran files to process.
 
     """