By default, the XQuery Mapper displays all links between source and target document nodes, regardless of whether or not the node associated with a link is currently visible in the Source Document or Target Document pane. Further, as your XQuery code becomes more complex, the mapper canvas can become dense with graphical representations of the functions defined in the code and the links that represent them. Consider this example of XML-Q4.xquery, one of the sample XQuery files in the Examples project installed with Stylus Studio.