23.1.2 Source area

This is an editor window where you should enter the initial form to step.

When you step into a function, a read-only copy of its definition is shown in the source area.

Notice that the editor cursor is an underline in the source area: this is because the normal cursor styles are not visible where the Stepper is highlighting a form.

Common LispWorks User Guide (Unix version) - 11 Apr 2005