clear all breakpoints?

[Thomas Gutzmann]

> It looks as though "put the breakpoints" and "set the breakpoints to 
> empty" will do it.

I love undocumented features.

> Experimentation seems to show they take global effect - it shows 
> breakpoints in various scripts.

Even breakpoints you can't delete:

group id 1016 of card id 1002 of stack "/Applications/Revolution 
2.5/components/global environment/revlibrary.rev",500

Does anybody know how get rid of a breakpoint in a read-only Rev 
supplied stack?

Thanks!

Thomas G.