### Namespace Definitions page

This page appears in the XQuery/XSLT Expression Editor, the XPath Expression Editor, and the Condition Editor.

The Namespace Definitions page lists default ALSB namespaces, variable namespaces, and user-defined namespaces. Click Add to define a new namespace, which is then added to the list of user-defined namespaces. To modify a user-defined namespace, select it in the list, then click Edit.