The ONLINE menus rely on the application keypad: PF1 - PF4, KP0 - KP9, etc. The problem occurs, if these keys do not trigger the expected events but print the numbers that are written on their faces.
User action: Use the terminal emulator xterm. Clicking Ctrl-left-mouse-button into the xterm raises the first menu, enable 'Old Function-Keys'. The Ctrl-middle-mouse-button invokes the second menu, select 'Enable Application Keypad'.
The options can be defined permanently by inserting the following lines
into ~/.Xdefaults
:
XTerm*appkeypadDefault: true XTerm*oldXtermFKeys: true
If the above actions are not sufficient: Use kbdr to ensure that the X server has the correct translation table, PF1 has to be mapped to KP_F1, KP1 to KP_1, etc. Fix it, if necessary.