Namespaces and some wording have been fixed.
I'd really like an example for this.  Anyone got a good one?
Simon St.Laurent
Dynamic HTML: A Primer / XML: A Primer / Cookies
2.5 Notation Declarations
Notation declarations are made with XSC:Notation elements nested in the 
XSC:XSchema element.
<!ELEMENT XSC:Notation (XSC:Doc?, ((XSC:PubidLiteral, XSC:SystemLiteral?) | 
XSC:SystemLiteral))>
<!ATTLIST XSC:Notation 
      name NMTOKEN #REQUIRED>
<!ELEMENT XSC:PubidLiteral EMPTY>
<!ATTLIST XSC:PubidLiteral
	Pubid CDATA #REQUIRED>
<!ELEMENT XSC:SystemLiteral EMPTY>
<!ATTLIST XSC:Systemliteral
	href CDATA #REQUIRED>
Notations may include Public Identifier or a system literal, or both in that 
order.