token data type
The xs:token data type represents a tokenized string. Derived from the xs:normalizedString data type.
The lexical form of xs:token is a string that does not
contain any of the following characters:
- carriage return (X'0D')
- line feed (X'0A')
- tab (X'09')
- leading or trailing spaces (X'20')
- internal sequences of two or more spaces