Quick overview of the call graph



Showing the recursion between the FB parser, the PP parser, and the lexer:

				+------------------> lexGetLookAhead() --------+
				|                                              |
				|                                              v
	 (begin)        (FB parsing)                (PP parsing)         (lexing)
	fbCompile()  ->  cProgram()  ------------>  lexSkipToken()  ->  lexNextToken()
		|               ^  |                       |     ^              |    ^
		v               |  |                       v     |              v    |
	   fbPreIncludes()  |  |('$include)       ppCheck()  |           ppDefineLoad()
			  |     |  |                       |     |          (macro expansion)
			  v     |  v                       v     |
			 fbIncludeFile()  <--------------  ppParse()
					(#include)    (directives)


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