Python Macros

[Arich Chanachai]

>I've not used ObjC - a code fragment with a brief explanation would
>probably help. (That description matches too many possible use cases
>and solutions... :) Posting a fragment *might* also jog someone's memory
>to be able to say "that's already implemented -- here" :-)
>
>  
>
Code fragment:

[Dog fetch:cat]  ---> Dog doesn't know how to fetch cat  --->  Dog 
passes message to human and essentially makes the following call ---> 
[Human fetch:cat]  ----> and so forth