// June 2005:

 XML 1.1 now has:
  NameStartChar ::= 	":" | [A-Z] | "_" | [a-z] | 
                        [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] |
                        [#x370-#x37D] | [#x37F-#x1FFF] |
                        [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] |
                        [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | 
                        [#x10000-#xEFFFF]

[4a]   	NameChar  ::=  	NameStartChar | "-" | "." | [0-9] | #xB7 |
                        [#x0300-#x036F] | [#x203F-#x2040]



Whitespace

  #x9 |#xD|#xA|' '|

  #x00A0 -- No break space
  [#2000-#200B] -- Spaces of various widths
  #x205F -- medium mathematical space
  #x3000 ideographic space


Previously XML was:
 XML 1.1              http:www.w3.org/TR/xml11/
 XML Namespces 1.1    http:www.w3.org/TR/xml-names11/
     Prefix ':' LocalPart
     Prefix is an NCName
     LocalPart is an NCName

     An XML Name, minus the ":"
     NCName    ::=    NCNameStartChar NCNameChar*
     NCNameChar         ::=    NameChar - ':' 
     NCNameStartChar    ::=    NameStartChar - ':' 

     NameChar and NameSartChar defined in XML 1.1
     NameStartChar := ":" | [A-Z] | "_" | [a-z] |
                      was: [#xC0-#x2FF] |
                      now: [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] |
                      [#x370-#x37D] | [#x37F-#x1FFF] |
                      [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] |
                      [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] |
                      [#x3001-#xD7FF] | [#xF900-#xEFFFF]

     NameChar      := NameStartChar | "-" | "." | [0-9] | #xB7 |
                      [#x0300-#x036F] | [#x203F-#x2040]

== Escapes

 \n = #xD
 \r = #xA
 \  = #x5C
 "  = #x22
 '  = #x27