Debugger breaking on traps?

[Richard Bram]

Can the Debugger/POSER combination set a breakpoint that is attached
to a Trap, rather than a particular line in source code?
(I remember this sort of useful function in MacsBug.)

I'd like to use it (for example) to see if FldSetText() calls
FldSetTextHandle() or vice versa, (or neither).

Thanks,
Rick Bram