I would like to ask you if there is a way to set a shortcut for Subtract from Polygon option?
No.
You must select the element first and then it is only one click to invoke the pet palette by clicking on the polygon, then it is just a case of selecting from the pet palette.
As it is just 2 clicks, I guess the programmers figure there is no need for a keyboard shortcut.
You would still have to select the fill anyway, so it is really only one click away.
Probably easier to invoke the pet palette than a keyboard shortcut as your mouse is right there on the polygon.
It should remember the last command you did so it should stay on subtraction until you choose something else.
'F' will cycle forwards through the pet palette commands and 'SHIFT+F' will cycle backwards.
I will leave this post in the 'Wishes' section and will add a poll just to see what others think.
Barry
One of the forum moderators.
Versions 6.5 to 26
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
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