outk -- Passes k-rate values out of a sub-instrument.
Sends k-rate values to be returned from a sub-instrument.
outk k1 [, k2] [...]
k1, k2, etc. -- k-rate values returned for the sub-instrument call.
If an instrument containing outk is called as a normal instrument, then the opcode will have no effect.
See the example for the ink opcode.
Author: Matt Ingalls
New in version 4.21