documentation for the macro "expanded_documentation"

Checks if the macros in the documentation are correctly expanded

It is defined in the file build.m4.

m4 code:

define(`expanded_documentation',
`define(`_policy_makefile_increments',`
check_expanded_documentation:` index.php'`'`
patsubst(`! cat index.php | grep [_]policy_doc_headline',^,
`	')'
'_policy_makefile_increments)dnl
define(`_policy_tests',_policy_tests`\
		check_expanded_documentation')')