DITA map modules

Maps have the same module structure as topics, and share some of the same modules for defining metadata.

map.mod (DTD)
mapMod.xsd, mapGrp.xsd (Schema)
Defines the base map structures.
mapGroup.mod (DTD)
mapGroup.xsd (Schema)
Adds topicgroup and topichead as specialized variants of topicref.

OASIS DITA Architectural Specification v1.0 -- 09 May 2005
Copyright (c) OASIS Open 2005. All Rights Reserved.