On 1-3-2015 19:12, clipka wrote:

> Suppose you have a set of macros to generate architecture; in such a
> framework, for windows you'll want both the windows itself, as well as a
> shape to cut a matching hole into the wall. And for some reason you
> might also be interested in knowing the area of the window, though I
> confess I just put it in there just to demonstrate that you can return
> values of different types.
>
Yes, I understand the principle but - as is always the case with my slow 
brain - I shall need to play with it in order to fully understand the 
potentials :-)

-- 
Thomas

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