Read card:         R    M %Gx bbb R
Punch & stop:      PS   M %G1 bbb P
Punch & go:        P    M %G1 bbb G
Skip punch         PSK  M %G1 nnn C
Print:             W    M %Y1 b01 W
Print & suppress   WS   M %Y1 bbb S
Write console      WCP  M %T0 bbb W
Read console       RCP  M %T0 bbb R