HP 48g Graphing Calculator - Manual (Page 570)

WAIT Command: Suspends program execution for specified time, or
until a key is pressed.
Level 1 ^ Level 1
0
^key
-1
-+
^key
WHILE Command: Starts the WHILE .
indefinite loop structure.
. REPEAT ... END
Level 1 ^ Level 1
WSLOG Command: Returns four strings recording the date, time,
and cause of the four most recent Warmstart events.
Level 1 ^ Level 4 . . Level 1
"/
094
" . . "/OfiTi"
ZX Command: Sums the values in the independent-variable column
of the current statistical matrix (reserved variable EDAT).
Level 1 Level 1
H-32 stack Diagrams for Selected Commands