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SGML Entity Management
Chapter 4 Examples

A few public and system identifiers pairings are shown below.

     PUBLIC "ISO 8879-1986//ENTITIES Added Latin 1//EN"
     /usr/lib/sgml/ISO_8879-1986/entities/Added_Latin_1
     	  
     "ISO 8879-1986//ENTITIES Added Math Symbols: Arrow Relations//EN"
     /usr/lib/sgml/ISO_8879-1986/entities/Added_Math_Symbols:_Arrow_Relations
     	  
     "-//IETF//DTD HTML Level 3//EN//3.0" 
     /usr/lib/sgml/IETF/dtd/HTML_Level_3.0
     
     "-//IETF//DTD HTML Strict Level 3//EN" 
     /usr/lib/sgml/IETF/dtd/HTML_Strict_Level_3
     	  
     "-//USA-DOD//DTD Table Model 951010//EN" 
     /usr/lib/sgml/USA-DOD/dtd/Table_Model_951010

The first four actually exist in Debian.