A Module is a unit that groups together a collection of other units for organizational purposes. A Module unit resembles a folder in a filing system.

<q ref="core.gml:Unit">Unit</q><ul><li>Any GML unit (including a Module unit) always belong to exactly one Module, except for the top-level Module (the model root unit) which has no parent. </li><li>A non-Module unit can be referenced from other non-Module unit in an unrestricted way. </li><li>The collection of Module units in a model thus forms a navigation tree, where the root is the top-level Module, the inner nodes are other Module units, and the leaves are non-Module units. </li></ul> <h2>Child Elements</h2> <q ref="core.gml:Usage">Usage</q>, <q ref="core.gml:Note">Note</q>(c) SAP AG 2003-2006. All rights reserved.