[Q]single Vs. double quote in representing AttValue

[Jiyun Lee]

I found some documents which use single quotation marks 
to surround attribute's values. 

ex. from XML spec in XML :
	<vcnote id="vc-roottype">
		.........
	<vcnote id='vc-PEinMarkupDecl'>
	
decl.	<!ATTLIST id ID #REQUIRED>

Is there any differences between sigle quote and double quote 
in representing the attribute's value? In the spec, both are possble. 
I'd like to know the rule for using them,  if the rule exists.
Thank you inadvance.

__
Lee, Jiyun                                                                              
Technical Center, Techno2000 Project, Inc.                 E-mail : jylee at t2000.co.kr 
807 Wallpyung-dong Seo-gu                                           Voice   : +82-42-483-2851
Taejon, Korea                                                                      Fax      : +82-42-483-2854    



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