# Document Management Module

## Relation Definition

| The copy and paste, and delete function of the context menu can be configured in the Relation Definition mask (System > Structure Browser > Relation Definitions).
Field | Description
Name | Name of the base entity.
Function | Shows the name of the function (e.g. Delete or Copy).
ID | Internal data key that is automatically created.
| ### Configuration Tab
| Entries in the Configuration tab define or change the functions to open a mask or the mask name. Entries not yet defined will be created and defined with default values by the system when they are used the first time.
| When copying and pasting objects (projects, items, documents) with structure, ID fields have to be created automatically (e.g. with help of the number server) to ensure a unique ID number.
| The Type field defines the relation between Entity 1 and Entity 2. For instance, if the relation between EDB-PROJECT and EDB-ARTICLE is defined as RELATION, then the relation between EDB-ARTICLE and EDB-PROJECT is defined as AGGREGATE.
| ### Excludes Tab
| The Excludes tab defines "stop elements" that should not be included when copying or deleting. If no stop elements are defined, all elements and their structure will be copied or deleted. For entries not yet defined, stop elements have to be set.