Rudder

How do I use the rudder?
In the manual it says [glow=yellow,2,300]Num 0[/glow] and [glow=yellow,2,300]Num enter[/glow].
If I press [glow=yellow,2,300]Num enter[/glow], it just changes to virtual cockpit and [glow=yellow,2,300]Num 0[/glow] does nothing.
In the manual it says [glow=yellow,2,300]Num 0[/glow] and [glow=yellow,2,300]Num enter[/glow].
If I press [glow=yellow,2,300]Num enter[/glow], it just changes to virtual cockpit and [glow=yellow,2,300]Num 0[/glow] does nothing.