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Well, at least you can send one now, should the urge strike.

Probably more an observation. Light generally comes from overhead or from the side. So when you use this with a bevel, you provide a visual cue which logically seems to the viewer that the object is...

The trick with a bevel is to adjust the Light Angle. By default when you apply a bevel the light angle is set for left center. To give the impression of a recessed shape or text the light angle needs...