Originally Posted by
dkoch
This has been in AutoCAD and its verticals since the 2012 release. Not that I have ever used it for project work. Activate it by CTRL+[arrow key]. As noted in the Help:
Nudge objects with Snap mode turned off: Objects move two pixels at a time; movement is relative and orthogonal to the screen, regardless of the view direction or the UCS orientation.
Nudge objects with Snap mode turned on: Objects are moved in increments specified by the current snap spacing; movement is orthogonal to the X and Y axes of the current UCS and relative to the view direction.