| DocBook: The Definitive Guide 2.0.17 (Alpha)

# Added Math Symbols: Arrow Relations Character Entities (%isoamsa;)

%isoamsa; — Added Math Symbols: Arrow Relations Character Entities

## Synopsis

The `%isoamsa;` parameter entity includes the ISO character entities with the public identifier:

    ISO 8879:1986//ENTITIES Added Math Symbols: Arrow Relations//EN

## Description

ISO and the W3C are cooperating to provide an official set of character entity references for XML. A description of this set is available at http://www.w3.org/2003/entities/iso8879doc/isoamsa.html

DocBook Character Entity Reference |  | Added Math Symbols: Binary Operators Character Entities (%isoamsb;)

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