Is there a way to make the visual (3D) display on the right spin or
rotate slowly so that one can get a better 3D appreciation without
having to manually manipulate the view point with the mouse?

Jon

Not automatically. You could setup  animation
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Other_Language_Features#.24t
.

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In other programs i use keyboard orbit, where WASD allow total up down left
right orbital of the display.

with openscad, the keyboard is always attributed to the text area, so the
control for orbit would have to be programatic or a new button on the
display area. in code it's just having access to the camera transform :D and
a time variable.

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