Wind pressure can be assigned to AFTERTOUCH control.
Most commonly, synthesizers will respond with vibrato
intensity much like with modulation control (s. 3.8),
but now your vibrato control comes from the wind
rather than from the lip pressure.

side C, D# & Eb increase AFRERTOUCH level +1
side C, D# & C decrease AFTERTOUCH level -1
side C, D# & Eb/C reset AFTERTOUCH to level 0
level 5 full range AFTERTOUCH control
level 4 1/2 range AFTERTOUCH control
level 3 1/4 range AFTERTOUCH control
level 2 1/8 range AFTERTOUCH control
level 1 1/16 range AFTERTOUCH control
level 0 no AFTERTOUCH data
The panic function resets AFTERTOUCH to level 0.
Thumb-X-press (s. 5.1) can simultaneously be used for AFTERTOUCH.
M U S I C A L   A P P L I C A T I O N S 
- Some sounds develop their vibrato only when playing intensely. Use the proper amount of aftertouch to obtain best musical results. 
- Aftertouch and modulation control can be combined, in order to produce vibrato that reacts to wind and lip pressure individually.
- More recent synthesizers (physical modeling etc.) allow for interesting timbre changes when receiving aftertouch.