Hi Andrei,
> Michael, is it possible to some how mark normal directions?
There isn't really any way set up to do it currently, it is something I want to add in the future though probably with some kind of display mode option.
> May be some script that will color surfaces with 2 different colors to show direction?
It needs stuff implemented for it deep in the display mechanism, it's not really possible for it to be done by script only.
- Michael
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