I typically do the following:
Type "UCS" in command line.
Rotate the UCS either by axis, points or object to desired rotation angle.
Type "PLAN" in command line and set to current. (This sets the paperspace viewport view only, to the UCS angle you set above. Modelspace is not affected by this rotation.)
Unactivate the viewport.
I'm lost as always.
There are two ways of viewports. One in MS and one in PS.
Hardly anyone uses Viewport in MS anymore, but that was how I read the question.
If the viewport is in PS, rotate the viewport.
If the viewport is in MS,
use DVIEW, Twist option
UCS, Z, 90 (as an example)
Either of the methods listed for MS can be used in PS, just activate the viewport and use one of the two methods.
I still use viewports in MS fairly extensively, for 3D and 2D work.
Viewports or "named" views in model space? How do you create a viewport in Modelspace? Or do you mean when working through an activated viewport in Modelspace. I'm confused now.
Viewports has been available in MS before there was a PS.
Go into MS and start the command, see the options available to you. Very handy for projecting lines across distances, for instance 2D elevations of plans, etc. Very handy in 3D to have multiple views, like front view, top view, iso view.
Oh yeah. I remember these now. I used them with ACAD2000 with roadway projects so I could "look" at different sections of a 5 mile project at same time. Wow, my memory must be fading. :-)
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