\section {Variables and Types}
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-\key{Current look ahead token.} {yychar}
+\key{Current lookahead token.} {yychar}
\key{Debug mode flag.} {yydebug}
\key{Data associated with the current token.} {yylval}
\key{Source position of current token.} {yylloc}
\key{Quit parsing immediately. Return 1.} {YYABORT}
\key{Quit parsing immediately. Return 0.} {YYACCEPT}
\key{Pretend a syntax error occurred.} {YYERROR}
-\key{Value in {\tt yychar} if no look-ahead token.} {YYEMPTY}
-\key{Clear previous look ahead token.} {yyclearin}
+\key{Value in {\tt yychar} if no lookahead token.} {YYEMPTY}
+\key{Clear previous lookahead token.} {yyclearin}
\key{Recover normally from an error.} {yyerrok}
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