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## BoostBook element `union`

union — Declares a C++ union or union template

## Synopsis

union ::= (template?, inherit*, purpose?, description?, (access| static-constant| typedef| enum| copy-assignment| constructor| destructor| method-group| free-function-group| function| method| overloaded-function| overloaded-method| data-member| class| class-specialization| struct| struct-specialization| union| union-specialization)*)

## Attributes

Name | Type | Value | Purpose
--- | --- | --- | ---
last-revision | #IMPLIED | CDATA | Set to $Date: 2008-06-15 15:48:40 -0400 (Sun, 15 Jun 2008) $ to keep "last revised" information in sync with CVS changes
name | #REQUIRED | CDATA | The name of the element being declared to referenced
id | #IMPLIED | CDATA | A global identifier for this element
xml:base | #IMPLIED | CDATA | Implementation detail used by XIncludes