Axis constraints when QuickSlicing?

[PixelJockey]

I have a stupid Max question. When you're polymodeling using QuickSlice is there a way to constrain your slices to the XY axis. Like the F8 key in Autocad which locks the cursor to the X and Y axis?

I have a bunch of planes that I need to slice up where I have to pick a reference point on the left side and slice straight across to the right. I could draw some rectangles snaping to the reference point and use that as a slice guide, but axis constraints seem like such an obvious solution. And Max's XYZ axis constraint toggle only applies to transforms. Unless I'm mistaken. Most illustration/cad apps have similar functions, but my brain is telling me Max doesn't do this. Please prove my brain wrong. Thanks a bunch.

[PixelJockey]

My question would also apply to drawing 2D lines where you want to draw only in the X and Y axis, but can't use Grid snapping.

[edit] Okay, so SHIFT key works for 2D lines, but not for the QuickSlice tool.

[claude_tnt]

ortho snapping mode.....you need to add it to your toolbar

[PixelJockey]

Brilliant! That'll do it. Thanks.