LEDs light at both end positions of the fader lever travel. Moving the fader
lever does not carry out a transition, but when the fader lever reaches the end
position the non-sync state is released, and it is now possible to carry out the
next transition. If the fader lever is moved in the direction away from the lit
LEDs, this carries out the next transition, over the remaining part of the fader
lever travel.
149
Executing a Transition