Instructions for the programmers that want to to make grammars based on the DocstringGrammar class
This variable will be a string, constructed from the docstrings and from the gramSpec variable at the top of the class definition. In any case, in the _init_ phase, the gramSpec is converted into a string.
- When you want to include/exclude grammar rules at start of the grammar, do this the way that is described for the IniGrammar specification, before you call the DocstringGrammar.__init__ function.
- When translated further, in the IniGrammar superclass, the other considerations about the variable gramSpec should be noticed.