"in" L C I(word, Word("in"), yyextra->in_.top() ? tk::In_ : tk::In);
"instanceof" L C I(word, Word("instanceof"), tk::InstanceOf);
"new" L C I(word, Word("new"), tk::New);
-"of" L C I(word, Word("of"), tk::Of);
"return" L R I(word, Word("return"), tk::Return);
"switch" L C I(word, Word("switch"), tk::Switch);
"this" L C I(this, This(), tk::This);
"yield" L C I(identifier, Identifier("yield"), tk::Yield);
"each" L C I(identifier, Identifier("each"), tk::Each);
+"of" L C I(identifier, Identifier("of"), tk::Of);
@begin E4X
"namespace" L C I(identifier, Identifier("namespace"), tk::Namespace);