The Synthesizer Parameter Manual says that the delay for the CONTROL DELAY effect is controllable. This effect has a Control Type parameter, one of whose values is Scratch. The definition of Scratch says that the effect will not be applied if Delay Time and Delay Time Offset are set to zero.
Fair enough, but I cannot find that Delay Time Offset parameter anywhere. Where is it?
The effect also has a Transition Rate perimeter which is not described in the manual. What is does it do?