Last X Oo - HP -67 Owner's Handbook Manual

Stack Lift and LAST X 323
A number keyed in following one of these keys does not affect the
stack:
EJ EEX
in RUN when preceded
EnG] mode by (), E23, or digit
@, @ —X-
STO
G
0-B
A number keyed in following one of these operations writes over the
number in the X-register and the stack does not lift:
[ £-)
LAST X
The following operations save x in LAST X:
)
TAN
TAN'!
Gy
F
(N