FW: Docs for namespace and other processing instructions?

david at megginson.com david at megginson.com
Tue Jan 5 02:19:46 GMT 1999

Jeffrey E. Sussna writes:

 > Thanks to Andrew for the answer to my question. Unfortunately, it
 > raises a couple of other questions:
 > 1. I assume reserved attributes such as "xmlns" need not be
 > declared in DTD's (or other schema mechanisms). Is this correct?

A valid XML 1.0 document has to declare all attributes used, even
magic attributes like xml:space, xml:lang, and xmlns and xmlns:*.
Nothing in the namespaces REC changes the interpretation of XML 1.0.

 > 2. Is there, or will there be, a centralized definition of XML
 > reserved objects (attributes, processing instructions, etc.) that
 > may be defined outside the XML spec, but which cut across general
 > usage of the language? I think there should be.

All names beginning with the letters [xX][mM][lL] are reserved, and no
other names are: only specs from the W3C's XML Activity should define
names beginning with these letters, and even then, we're trying to
avoid them.

All the best,


David Megginson                 david at megginson.com

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