[PD] put the argument of an abstraction in a message

[Charles Goyard]

Hi list,

I have an abstraction named "overlap". It takes an argument, such as
"first" or "second".

This abstraction outputs a list. I would like this list to contain the
argument. I tried with $0 from inside the abstraction to no avail. It
looks like $0 is available only to send and receive ?

Maybe this sounds obvious, but I can't find the answer.

Thanks,

-- 
Charlot