Sometimes this can happen and I’m not sure why. The fix is use the rotateView command (or button) to get it back to rotating.
You may also like
Not currently, and probably not for quite some time.
These would be isocurves. You can turn them off in the display settings of Rhino by setting them to zero width: Tools/Options/View/Display […]
Your relevent FAQ answer.
Zero values essentially tell Shoe Last Maker that you are working with a template that was developed in an older version of […]