If you do not wish to use the Process Browser to break a particular process, you can use the keyboard command
Alt+Ctrl+C
to break the current process. Note that you must use the true Alt key on your keyboard for this command. Alternatively, click the
Interrupt Lisp
button on the GC Monitor window.
In the Listener tool, you can break the evaluation process as described in Interrupting evaluation.
You can break a process by calling the function
mp:process-break
.