optional attributes in abstract modules?

Is there any way to indicate whether attributes are required or optional or
defaulted within the abstract XHTML 1.1 modules?  Section 4 of Building XML
Modules appears to be silent on the matter.

Simon St.Laurent
XML Elements of Style / XML: A Primer, 2nd Ed.
Building XML Applications
Inside XML DTDs: Scientific and Technical
Cookies / Sharing Bandwidth

Received on Wednesday, 5 April 2000 13:03:03 UTC