wK
Window kill.
RK CM registers
GRK NM general registers
SRK NM special registers
PK Program, current mode
CMPK CM program
NMPK NM program
QK CM frame, Q relative
SK CM stack, S relative
GK Group window
UK [win_number] User window
VK [win_number] Virtual window
ZK Real memory window
LK LDEV window
TXK [win_number] Text window