How to use the ctrl+^ shortcut in Inkscape?

[Krikor]

Hi!

In Inkscape it is possible to perform some Boolean functions (I think this is the term) both via the menu and keyboard shortcuts.

For Union (ctrl+ +) or difference (ctrl+ -) I can easily get results both via the menu and via the keyboard.

However, for Exclusion (ctrl+ ^) or Intersection (ctrl+ *) I can only do it via menus (Path - Exclusion). 

I have tried to produce the ctrl+^ key combination in several ways; numeric keypad (8 key), ~/^ key, but no results.

Would anyone know how to make these shortcuts work via keyboard? Possibly I'm missing something very simple (at least from the Inkscape developers' point of view).

Thanks.