To create an XPath function using the target tree context menu
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Right-click the target tree node (Map View) or the XSLT tree node (XSLT View) to which the XPath function needs to be assigned. The context menu appears.
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Select Create XPath. Select the desired XPath function from the submenu that appears.
The function is created in the canvas pane and linked to the target/XSLT node for which it was created.
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If the function requires parameters, edit the parameters using one of the methods discussed in How to Modify an Existing Function XPath Expression in the Canvas Pane.
