Hi Mike,

> I've learned that depending on which way to move the
> corner handles, you can effect the way that the (z) hidden
> directions on an object can be scaled also.

Actually if I understand what you're talking about (doing uniform scaling vs only doing 2D scaling and leaving the vertical direction unscaled, right?) then that's controlled by holding down the Shift key when you drag a handle.

Normally when you drag it does a uniform scale but if you hold down shift it will do the non-uniform 2D type scale.

The way you move the corner handles does control whether you'll do a 1 directional stretch or not though - if you track along the horizontal or vertical line when dragging the corner it will do a 1D stretch in that horizontal or vertical direction, you'll get a tracking line displayed when that is active to help you see where you need to keep the mouse nearby to get the stretch.

If you don't want any 1D stretching, move your mouse a ways off of that line and then it will stop doing the 1D stretch stuff - that way you can kind of "shake off" the stretch mode.

- Michael