string
An indication of the views in which the glabel primitive is to be visible. This is a string value constructed from one or more of the following view indication characters:
N, S, E, W, P, U, D - Plans and Elevations
I1, I2, I3, I4 - Isometrics
V - Perspective
O - General orthographic
Changing this value may have an immediate effect depending on the current view.