How to get the context into a ContextTool

How to get the context into a ContextTool?

I am playing with a ContextTool, which  does a lot for me, but I
want to be able to manipulate the context from within my too.

I can do it in a dirty kind of way, by putting the context in
a var "WM_CONTEXT" into the context.

And if I have to get of set something, I'll do it like this in my template:
$util.manipulate($WM_CONTEXT);

But I was wandering if there isn't any better, cleaner way to do this?
Can a ContextTool (that is loaded once) manipulate the exact context
the end-user is playing with?

- Marcel -

PS. I start working for a java-company next year, so I hope to do more WM.


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