HP 39g+ - Manual (Page 274)

R-20 Reference information
(OFF SCREEN) Function value, root, extremum,
or intersection is not visible in the
current screen.
Receive Error Problem with data reception from
another calculator. Re-send the
data.
Too Few
Arguments The command requires more
arguments than you supplied.
Undefined Name The global variable named does
not exist.
Undefined Result The calculation has a
mathematically undefined result
(such as 0/0).
Out of Memory You must recover a lot of
memory to continue operation.
Delete one or more matrices, lists,
notes, or programs (using
catalogs), or custom (not built-in)
aplets (using
>6+,)7@
MEMORY ).
Message Meaning (Continued)