Last night I was reading about implementing my own stack. The example
given pushes items on and off the stack at the start and end of each
procedure (ie. in a std module). What's not so clear is how this
would work with class objects. In this case do you have to push the
object on the stack at the start of every public procedure etc. in the
class and pop it off at the end? I can't see how else you can know
which object is active - or is this not normally a situation where a
stack is employed?

Thanks in advance,
Andrew