can we drop the list-callers interface and just use who-calls? i don't think slime sholud expose two ways to do the same thing. if we want structure slime's xref implementation in two layers, for whatever technical reasons caused us to have these two functions, i'm fine with that. -- -Marco Ring the bells that still can ring. Forget your perfect offering. There is a crack in everything. That's how the light gets in. -Leonard Cohen