How *does* Powerbuilder POST work?

Unfortunately searching for 'Sybase Post' doesn't get me the answers I'm looking for.

I want to know what开发者_运维知识库 the actual function is of POST

As in

.. procedure lala
POST procedure1()
procedure2()

I'm guessing in the above code, procedure2 would be executed before procedure1, that's fine.

But when is it processed? After everything else is done? Why do you use POST, and when is it appropriate? Can POST lose the context of the row and dw that you are trying to process?

Any linking to the right Sybase Info source would be grand, cheers.

It's not an T-SQL keyword, but a PowerBuilder one.

Here's the Sybase explanation.