A wide variety of tracing operations are available in the Buffers , Definitions and Expression menus. The scope of each operation depends on which menu the command is chosen from.
Choose Trace from either the Buffers , Definitions or Expression menus to display a menu of trace commands that you can apply to the current region or expression, or the currently selected buffers or definitions, as appropriate. Note that you can select several items in the buffers and definitions views.
See Tracing symbols from tools for full details of the tracing facilities available in the Editor.