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   RE: Blank value in attribute list

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  • From: Richard Tobin <richard@cogsci.ed.ac.uk>
  • To: Mallikarjuna Sangappa <malliks@rocketmail.com>, xml-dev@ic.ac.uk
  • Date: Mon, 28 Jun 1999 14:23:10 +0100 (BST)

> How does one specify in the DTD so that the attribute
> is required and is one of the values of the possible
> values.

You can't do this.  The allowed values for an enumeration type are
NMTOKENs, and the empty string is not an NMTOKEN.

-- Richard

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