See: <a href="/doc/reference/classes/ucalc.tokens/add/add-string,-tokentype,-string,-int,-regexgrammar,-int/">Add(string, TokenType, string, int, RegExGrammar, int)</a>, <a href="/doc/reference/classes/ucalc.tokens/description-=-[string]/">Description = [string]</a>, <a href="/doc/reference/classes/ucalc.tokens/description/description-string/">Description(string)</a>, <a href="/doc/reference/classes/ucalc.transformer/tokens-=-[tokens]/">Tokens = [Tokens]</a>, <a href="/doc/reference/patterns/introduction/tokens/">Tokens</a>, <a href="/doc/reference/patterns/introduction/whitespace/">Whitespace</a>