Insert/Remove Tracepoint
Shift+F9
The XSL/XQuery | Insert/Remove Tracepoint command inserts or removes a tracepoint at the current cursor position in an XSLT/XQuery document. For statements with a tracepoint, during debugging, the value of the statement is displayed in the Trace window when the closing node of that statement is reached. A dashed blue line appears above the node when you set a tracepoint. Tracepoints cannot be defined on closing nodes. This command is also available by right-clicking at the tracepoint location.