In Vietnam, almost drafters don't use paper space. We usually to draw all in model space ! So may be this is an useful routines for drafters outside Vietnam :)

This routine i made in 2008. Because rotating a viewport in paper space need too many mouse and keyboard clicks, i tried to change it, make it as easy as rotating any other object.

So, here it is, the command is C:MR

Another command included is C:MSC which would scale both the boundary and the view scale of the MViewport. The basepoint is the center of the MViewport. This command is made since AutoCAD 14 ! :) Now with new AutoCAD version, we can do this with the Scale dropdown list. But i thought it is still useful, because it is different !

I don't know much about the enhancements in AutoCAD recently. May be there is some other better commands to rotate and scale a MViewport ? Anyway, I've made it myself :)