Hi Specktech,

Apply Mirror command to the object to create the "virtual" twin, which may be reverse handed.
As long as History is not terminated, further actions on the real object are duplicated on the virtual object, for many commands, but not all(?)
But History does not apply to all commands, and is only so deep, and history can come to an end, and ...?

There are other posts about History...

- Brian

The plane of the reflector surface (mirror) is determined by the two points chosen in the Mirror command, and the View, Top/Bottom, Front/Back, Right/Left.

I would like to have an alternate Mirror command, where the first point chosen is on the surface of the reflector mirror, and the second choice is a Plane or a Frame, for orientation of the reflector mirror.
I think that this might be useful in 3d view.
https://moi3d.com/forum/index.php?webtag=MOI&msg=10186.1