To create an XPath Function using the canvas context menu
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Right-click a blank area in the center canvas pane. Select Create XPath from the context menu that appears.
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Select the desired function from the Create XPath submenu. For example, select the current-date function from the Date Functions category.
An Information dialog may appear, prompting you to connect the function to a target node. Click OK.
The function icon appears on the canvas pane.
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Map the function to a target node by dragging a line from the function to the target node.
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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.
