#4 entering @ on Apple Macintosh (Mac OS X)

[Eismann]

Copernicus Version 2.0.1 (Stand-Alone Jar)

Alt+L is used on Macs to enter the @-sign. This
keystroke combination is also used for opening the
Language menu in Copernicus. When entering the @-sign
the Language menu is opened, too.

A work-around is to hide the Language menu by enabling
the menu item Options/Hide Languages.

I do not think that the Language menu really needs a
keyboard shortcut.