Neil Heller wrote in a message to All:

 NH> I want to write a program that would contain an unknown number of 
 NH> modules.  None of the modules would contain or use global variables
 NH> and  none would be dependent on anything outside that module
 NH> itself.  What I  envision is some way for a module to be able to
 NH> tell a controller: 

 NH>      1.  that it exists.

Make one of the modules mandatory ("main{}" :-) and use it to
"register" whatever else gets included.

 NH>      2.  what it does.  This would be a string supplied by the     
 NH>     module itself (such as: "What is the meaning of life").

That's kinda application-dependent,  isn't it?

 NH>      3. what function would have to be called in order for the     
 NH>      module to spring to life.

Pass a pointer to a function?

 NH> Does anybody have an idea how I could implement such a beast? 

See above.  

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