QUESTION
 How can you invoke the IBM Smalltalk Garbage collection routine?  It
 would be very handy to do Garbage Collection on demand in
 an application.

ANSWER
 VisualAge/IBM Smalltalk allows the programmer to invoke garbage
 collection programmatically. Look at the following methods:

 For VisualAge version 1.0:

 System>>#globalGarbageCollect
 System>>#scavenge

 For VisualAge version 2.0:

 EmSystemConfiguration>>#globalGarbageCollect
 EmSystemConfiguration>>#scavenge