Cubase SX Notation

recently I reactivated my old SX 1.6 just for a little task.

When I open the score editing window I see telephones, postboxes … all sorts of things instead of note heads.
I can imagine that this is a matter of which font is chosen.
After many many hours of seeking I still do not find any way of choosing the notation font.
The text font can be changed at several places … but no means to get access to the note font.
I do not even know which font should be used by cubase, every manual and help files keep quiet about that.
In my system there are several notation fonts … also from other programs.
Oh well …