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Removing left-handed faces
While creating non-conformal interfaces, user came across left-handed faces upon grid check. Usign the TUI option grid-modify zones-repair face-handedness did not remove the left handed faces.
If the TUI option fails then this is found to work nicely.
At command prompt, type
to check the current value of the variable. It returned 1 for me.
(rpsetvar 'nonconformal/cell-faces 2)
This sets the left handed faces and grid check returned with no left handed faces.