by Eric van der Vlist is published by O'Reilly & Associates (ISBN: 0596004214)
list — Text node split
(pattern), attribute, datatypeName param exceptPattern, element, list, mixed, pattern&pattern, pattern*, pattern+, pattern,pattern, pattern?, pattern|pattern
The list pattern splits a text node into tokens separated by whitespace to allow the validation of these tokens separately. This item is most useful for validating lists of values.
This text is released under the Free Software Foundation GFDL.