Why won't two word attribute values work in a DTD using the enumerated type? For instance:<br>The following gives an error - "Invalid character found in ATTLIST enumeration." The marker points at the "o" in the first instance of the word "one".<br><!ATTLIST ELEMENT ATTRIBUTE (value one ¦ value two ¦ value three) "value one"><br>If the values are changed to single words (valueone, etc.) all works fine.<br>Is there a way to use two word attribute values with this method?