Arbortext Command Language > Functions by Alphabetical Listing > entity_tag
  
entity_tag
entity_tag (tagname[, doc])
This function returns 1 (True) if the markup named tagname is really a tag used to represent an SGML entity declaration. If the markup is not an SGML entity declaration, 0 is returned. The doc argument specifies the identifier of the document tree to query. If omitted or 0, the current document is used.
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If the document type definition for your document instance includes the NAMECASE GENERAL NO setting, then the tagname parameter will be case-sensitive.