; ^\[ \]$ ^_?X\-[a-zA-Z\-]+ \[[a-zA-Z_]+\] ^[a-zA-Z_][a-zA-Z0-9_.]* true false on off yes no ' ' " " \b[0-9]+\b (\b[0-9]+(\.[0-9]+)?|\.[0-9]+)([Ee][\+-]?[0-9]+)?\b