Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....
Document Type Definition is a set of markup declarations that define a document type for SGML-family markup languages...
(DTD) to designate mixed content XML elements.
#PCDATA in XML DTD
In XML DTD, #PCDATA is the keyword to specify mixed content, meaning an element may contain character data as well as child elements in arbitrary order and number of occurrences. For example:
t so, #PCDATA itself is not a semantic term for character data; it can only appear as the leading syntactic construct in mixed content definitions. The following usages are improper:
title PCDATA -- use it in attribute type-->
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