PUBLIC identifiers in XML?

Simon North north at
Thu Jun 26 09:29:17 BST 1997

This is mostly likely a RTFM question, but the XML FAQ says:

    "No public identifiers in entity and notation declarations"

While the XML-lang says (page 22 in the dead tree version or see for the 
borrowed electrons version):

    "No public identifiers in ENTITY, DOCTYPE, and NOTATION 

but at the same time, XML-lang explicitly includes PUBLIC in the 
production rule (Section 4.3.2, page 18 or see AND 
has an example of an external entity declaration that *does* use a 
public identifier.
I've also seen public identifiers used in DOCTYPE declarations for 
XML, and I had understood that this was OK but should still be 
supported by a SYSTEM identifier. 

I had also heard/read somewhere that a resolution mechanism for 
public identifiers was being worked on and that the restriction might 
then go away. 

Could someone please enlighten me on this?


Simon North - COSSAP Technical Writer, Synopsys
Synopsys GmbH, Kaiserstr. 100, 52134 Herzogenrath
Germany. +49 2407 955873 -- north at
Voice mail: +1 415 694 4141 55055

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