HP 39g Graphing Calculator - Manual (Page 276)

Message Meaning (Continued)
(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 | shift jMEMOffy).
R-20 Reference informaiion