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   Query about doc well-formedness

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  • From: David Megginson <david@megginson.com>
  • To: "'xml-dev@ic.ac.uk'" <xml-dev@ic.ac.uk>
  • Date: Tue, 25 Aug 1998 08:31:27 -0400

Peter Jones writes:

 > In the XML 1.0 spec there is a well-formedness constraint upon the
 > document which reads, "Each of the parsed entities which is referenced
 > directly or indirectly within the document is well-formed."
 > Does this mean

 > A) That a well-formed document can contain <!ENTITY...> declarations
 > without ceasing to be merely a well-formed doc and becoming a
 > validatable one?

All valid documents must be well-formed; or, in other words, anything
allowed in a valid document is by definition allowed in a well-formed
document (or else the valid document would fail to be well-formed).

Well-formedness is simply a lower level of syntactic checking for a
document; it is not a restricted subset of XML.

 > B) Indeed, such declarations must be made within the base document
 > for any entity reference (not directly accessible as supplied with
 > the computer's OS) to avoid violating the well-formedness
 > constraint?

I am not certain that I really understand the question.

All the best,


David Megginson                 david@megginson.com

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