Macro Expansion.     (line   6)
* macro representation (internal):       Macro Expansion.     (line  19)
* macros:                                Hash Nodes.          (line   6)
* multiple-include optimization:         Guard Macros.        (line   6)
* named operators:                       Hash Nodes.          (line   6)
* newlines:                              Lexer.               (line   6)
* paste avoidance:                       Token Spacing.       (line   6)
* spacing:                               Token Spacing.       (line   6)
* token run:                             Lexer.               (line 191)
* token spacing:                         Token Spacing.       (line   6)