tbh14 flipping view temporarily?

this was asked years ago, and not definitively answered, so:

is there a way to flip the VIEW of all the layers temporarily while drawing, in the camera and/or drawing view? i like to do this while drawing for a fresh look at the drawing.
the the 2 commands i know of both TRANSFORM by either:
a) flip an individual drawing/frame on only one layer (not others in view), or
b) the whole drawing layer (or however many layers are selected, not the other unselected layers in view) via it’s coordinates (the ‘4’ key).

neither flip all the layers being viewed.

My quick and dirty method is to just add a peg to everything I want flipped- and flip that.