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SGML Open Catalog: example DTD

Introduction: SGML Open Catalog library examples

Sample

  <!-- Example DTD to illustrate use of DOCUMENT and DTDDECL entries
       in SGML Open Catalog -->

  <!-- This entity contains declarations typically expected to be 
       referenced in an SGML document's doctype declaration as follows:

  <!DOCTYPE socatex PUBLIC "-//SOCATEX//DTD Article 19960430//EN">

  -->

  <!element socatex O O ((A|B)+) >
  <!element A  - O (#PCDATA) >
  <!element B  - O (#PCDATA) >