Since 3DS Max 2014 we have "2d pan zoom mode" only for 3D viewports in nitrous mode Instead of pan zoom feature in "viewport configuration" menu for panning and zooming background images in all the viewports (although if you use "Lagacy Direct3D mode" you have that in viewport tap in preference menu). That's a small feature but useful for modeling in 2D viewport specially when need a image reference for modeling (that's faster than using plane reference method).
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