Defines a number of tokens used for parsing XML. Not for general consumption.
Constants
      | NCNAME_STR | = | '[\w:][\-\w.]*' | 
| NAME_STR | = | "(?:#{NCNAME_STR}:)?#{NCNAME_STR}" | 
| NAMECHAR | = | '[\-\w\.:]' | 
| NAME | = | "([\\w:]#{NAMECHAR}*)" | 
| NMTOKEN | = | "(?:#{NAMECHAR})+" | 
| NMTOKENS | = | "#{NMTOKEN}(\\s+#{NMTOKEN})*" | 
| REFERENCE | = | "(?:&#{NAME};|&#\\d+;|&#x[0-9a-fA-F]+;)" |