-* assertions: Hash Nodes.
-* controlling macros: Guard Macros.
-* escaped newlines: Lexer.
-* files: Files.
-* guard macros: Guard Macros.
-* hash table: Hash Nodes.
-* header files: Conventions.
-* identifiers: Hash Nodes.
-* interface: Conventions.
-* lexer: Lexer.
-* line numbers: Line Numbering.
-* macro expansion: Macro Expansion.
-* macro representation (internal): Macro Expansion.
-* macros: Hash Nodes.
-* multiple-include optimization: Guard Macros.
-* named operators: Hash Nodes.
-* newlines: Lexer.
-* paste avoidance: Token Spacing.
-* spacing: Token Spacing.
-* token run: Lexer.
-* token spacing: Token Spacing.
+* assertions: Hash Nodes. (line 6)
+* controlling macros: Guard Macros. (line 6)
+* escaped newlines: Lexer. (line 6)
+* files: Files. (line 6)
+* guard macros: Guard Macros. (line 6)
+* hash table: Hash Nodes. (line 6)
+* header files: Conventions. (line 6)
+* identifiers: Hash Nodes. (line 6)
+* interface: Conventions. (line 6)
+* lexer: Lexer. (line 6)
+* line numbers: Line Numbering. (line 6)
+* macro expansion: 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 192)
+* token spacing: Token Spacing. (line 6)