From: "David Joyner" <[EMAIL PROTECTED]>

> I was wondering about this myself. Maple has a command that does
> exactly this (I think it is the "ops" command).

It's op. Maple represents objects using DAGs (directed acyclic graphs 
literally, but it also includes enumeration of child vertices), and op lists 
all vertices below the given vertex. For different representation of objects 
it may be not that easy to do.

Alec 


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