demodefined in the LispWorks library file
examples/tools/demo-utils.lispin an Editor and set a breakpoint at the call to
+as described in Setting breakpoints.
(my-useful-function 42)in a Listener.
Figure 26.3 Stepper invoked by reaching a breakpoint
my-useful-functionreturns, the Stepper is hidden and the Listener tool becomes active again.
LispWorks IDE User Guide (Windows version) - 25 Nov 2011