a-zA-Z0-9 -_ (space, hyphen, underscore)

This is the unique specifier to refer to a device in the form of: ‘Net’.’Site’.’Type’.’Device’ ‘Net’ is the CAM Network name ‘Site’ is the CAM Site name ‘Type’ is the […]

See the NOTE at the end of the “Keyboard & Mouse preferences” section of “User Settings” in the manual for solutions for Windows and Linux.

It’s SHIFT + Middle Click instead, as middle click is used by GFX for the info menu of the variable(s) of an icon or text box.