scott wrote:
>> Care to define what "extrude" means?
> 
> Shifting a face in the direction of its normal, and filling in the gaps 
> between the shifted face and the other faces that it used to be 
> connected to (by automatically adding more faces perpendicular to the 
> selected face).

Ah, I see.

> Example in amazing 2D ASCII:

TMFT alert! ;-)

> It's a very useful tool in 3D mesh design.

I suppose...

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