title: How to find the procedure handle of the calling procedure?
body: <p>I'm trying to write some testing programs and I have an idea to run a procedure, and have the procedure call internal functions and procedures in the calling program. As I understand it, you can use <code>RUN x IN y</code> where y is any procedure in the calling stack.</p>
  
  <p>However, I can't seem to find any way of getting the handle for the calling procedure. There doesn't seem to be a means of moving up the call stack.</p>
  
  <p>The only way I can think of doing it is by passing the calling procedure's <code>THIS-PROCEDURE</code> handle as a parameter. It would work, but seems rather inelegant.</p>