DTD Reference: External (continued)

A DTD can also be stored on a network. The SYSTEM keyword is replaced by PUBLIC, which is followed by the URL of the DTD file. For example:

    <!DOCTYPE Messages PUBLIC     "http://www.mydomain.com/dtd/messagelist.dtd">

The example indicates that the external DTD is stored at http://www.mydomain.com/dtd.

The graphic shows how an XML document can refer to a DTD that is stored on a network.
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