names of element types

From: Ed Shaya <eshaya-at-umd.edu>
Date: Tue, 27 Nov 2007 12:37:14 -0500

XML element type names use XML Name patterns. Here is the definition of Name from the XML 1.0 Rec (4th edition): 

          Names and Tokens


          [4]       NameChar       ::=       Letter | Digit | '.' | '-'

          | '_' | ':' | CombiningChar | Extender


          [5]       Name       ::=       (Letter | '_' | ':') (NameChar)*

Therefore element names can only start with Letter, _, or :. And, in fact Protege would not allow a Class "21cmLine" but would allow "_21cmLine".

Ed Received on 2007-11-27Z18:37:42