SGML, XML and SML

[Rick Jelliffe]

 From: Don Park <donpark at docuverse.com> 

>>Well, it is not XML at all if  it miss-parses a well-formed XML
>>document.
>>
>><a>
>>    <?b </a> ?>
>>    <!-- </a> -->
>>    <![CDATA[ </a> ]]]>
>></a>
>
>Rick, I think you are actually picking an example favoring
>the use of SML.  It might be legal XML but it is also a
>bracketed ball of mess.  Besides, SML processors can't
>parse full XML just as XML parsers can parse full SGML.
 
No, every XML document is a legitimate WebSGML document.
But would every SML document be a well-formed XML document?

That example is one that SML would have to have a policy on:
one that would constrain documents to being XML is to barf
whenever <!  or <? was found.
    
If you want a less bracketed mess, then pick any one of
    <a><!-- <a/>  --></a>
or
    <a><!?x <a/>  ?></a>
or 
   <a><![CDATA[ <a/>  ]]></a>

Or even:
<p>In HTML, use the &lt;!-- comment delimiter open </p>


Rick Jelliffe


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