### XPath Expression Editor

Use the XPath Expression Editor to create an XPath expression, which is then inserted into the location from which you launched the editor.

The XPath Expression Editor contains these pages:

- Expression page
- Variable Structures page
- Namespace Definitions page
- XQuery Functions page

You can write an expression directly in the Expression text field, or you can drag variables from the Variable Structure page and drag XQuery functions from the XQuery Functions page to construct a valid XPath expression.

When you are finished constructing the expression, you can click Test to test the expression on a running server. Or click OK to insert the expression without testing it.