In plots, the traces can be moved by dragging with mouse button 1, either within a plot or between plot windows. Thus, the order of the traces can be changed. Traces can be ``grabbed'' by pressing button 1 near the trace legend, but not over the legend text itself. A square wave marker is attached to the pointer when a trace is being dragged.
Traces can be dropped within the legend area of another trace, in which case the dragged trace occupies the drop trace location, and the drop trace and below are shifted down. Traces can be dropped in the legend area but below all existing legends to move a trace to the end.
Dragging trace data between plots is an an easy way to see differences between simulation runs. The trace data are copied and interpolated to the new scale. If the new scale is not compatible, the operation will fail.
While a trace is being dragged, pressing the Delete key will delete the trace (and end the drag). This will permanently remove the trace data from the plot, and is not undoable. However, if the plot contains only a single trace, it will not be deleted.