Character entity set for RFC-2629 source xml documents.

     There is no need to invoke this directly from

     the source document itself; just invoke the DTD.

     These are known to (X)HTML, so any converter to these

     formats can just leave them as is without having

     to invoke this file from the output file.

     Conversion to txt or nroff format will replace

     these entities by the parenthesized text.

     Typical invocation:

                PUBLIC "-//IETF//ENTITIES XHTML subset for RFC 2629//EN"

                       "http://xml.resource.org/authoring/rfc2629-xhtml.ent">

       %rfc2629-xhtml;

-->