Comment 2 for bug 1818930

I think it makes sense to have a convention to reserve "O" and "C" for OK and Cancel for the sake of consistency. Orientation can use "R".

This is a string change, so it'll have to wait now until v6 opens.

Other issues in the dialog that should be hit at the same time:

* Graphic style, X pos, Y pos, Pin length, all do not have Alt accelerators
* Accelerators for most text/drop down don't work, or select the wrong one (Eg Alt-E selects "X pos")

In the meantime, Enter/Esc do OK/Cancel as normal.