Suggest: rotate snap at 90 degree intervals

[marsh]

Similar to the way a desktop window can snap against other windows, could the same idea apply to rotation slider so that it will land more easily on 90, 180, 270, 360 degree points?

[xnview]

What do you means?

[marsh]

While moving horizontal slider, <--------0--------> , to use the same rate unless it meets 90 degree axis. If slider could slow down for those numbers, maybe it would have illusion of mechanical device resting on a preset notch.