★How to rotate a viewport in ZWCAD without changing the view in the viewport

Issue: 

When rotating a viewport in the layout space, the view inside the viewport will rotate with the viewport by default, as shown below:

How to rotate a viewport without spinning the view inside the viewport?

Solution:

The VPROTATEASSOC variable controls whether the internal view rotates with the viewport.

Input VPROTATEASSOC in the command line, and set the value to 0.

The users can rotate a viewport without spinning the view inside the viewport.