Ever used the gimbal in the standard DG? No, because it's panel-controlled -> unusable.
This is the standard Orbiter 2006 DGÂ DLLÂ with gimballing function wired directly to attitude control.
That mean, if you command it (with joystick or keyboard) to turn or pitch, the engines will gimbal to assist.
If you flyed "Napkin" by over_g, it's the same concept.
Usage: To turn Gimbal assist On/Off use M key. Current GA status is shown on the HUD lower-left corner.
Update: Set the default state to off, added an .scn line to enable/disable gimbal assist.Â