SUMMARY: XML Validation Issues (was: several threads)

Simon St.Laurent simonstl at
Thu Apr 8 17:54:13 BST 1999

At 08:22 AM 4/8/99 -0700, Tim Bray wrote:
>>(not to UI designers, provide two
>>separate icons for "validate" and "check wf" )
>Yes!  IE5 has a nice validation capability, but no way (that I've 
>found) for the user to invoke it.  Is there one?

lt.asp.  I don't know that it counts as 'user invocation' the way you meant,

>Good question; I can see both sides.  But in fact, Chris, I think what's
>motivating you here is less a concern for forcing validation than a 
>concern for forcing the use of the external DTD for entity declarations
>& attribute defaults and so on.  Which is fine; but I think there are
>2 separate questions here:
> - should a document be able to ask for validation
> - should a document be able to ask for guaranteed reading of all
>   external entities
>Related but distinct. -Tim

And that's precisely why XML Processing Description Language (XPDL) separates
them.  See for details.  It also provides a
mechanism for making the readability of these features optional, when
appropriate, though the default requires the resources to be read.

Simon St.Laurent
XML: A Primer
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