In DCC mode: 
W-WWWWWWW for increase/forward
X-XXXXXXX for decrease/reverse 
S for stop
H-horn
B-bell
L-light
pantograph up/down is one I am unsure of ?
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In Cab Mode:
R-reverse
F-forward
A-application
Z-lap
Q-release
W-increase
S-stop
X-decrease
C-dynamic braking
D-independant brake
Ctrl+D-decouple
 
I use these commands when driving in Cab mode: A S F Q W WWWWWWW X XXXXXXX C W WWWWWWW  X XXXXXX C and Q-25 press's ... etc ... etc