Levi Connolly sent in this tip about being in two places at once in an AutoCAD drawing.
Have you ever found yourself scrolling back and forth from one spot to another in model space, referencing material in one place and checking tables in another, zooming in and out, panning over here and back there? I use multiple viewports to be in two places (or three or four) at once in model space! You have the ability to view up to four viewports at a time in various arrangements.
This handy tool is located on the ribbon in the View tab under the Viewport configuration pull-down menu. For the non–ribbon users, the command is also located in the View menu under Viewports.
Notes from Cadalyst tip reviewer R.K. McSwain: This was popular back in the day before easy mouse scrolling zooms, when zooming and panning around in a drawing was a much more time-consuming task. As Levi points out, this can still be a time-saving practice today.