HP 39g+ - Manual (Page 175)

Variables and memory management 12-7
Home variables
It is not possible to store data of one type in a variable of
another type. For example, you use the Matrix catalog to
create matrices. You can create up to ten matrices, and
you can store these in variables M0 to M9. You cannot
store matrices in variables other than M0 to M9.
Cate-
gory
Available names
Complex Z0 to Z9
For example, (1,2) Z0 or 2+3i
Z1. You can enter a complex
number by typing (r,i), where r represents
the real part, and i represents the
imaginary part.
Graphic G0 to G9
See “Graphic commands” on page 16-
20 for more information on storing
graphic objects via programming
commands. See “To store into a graphics
variable” on page 15-5 for more
information on storing graphic object via
the sketch view.
Library Aplet library variables can store aplets
that you have created, either by saving a
copy of a standard aplet, or downloading
an aplet from another source.
List L0 to L9
For example, {1,2,3} L1.
Matrix M0 to M9 can store matrices or vectors.
For example, [[1,2],[3,4]] M0.
Modes Modes variables store the modes settings
that you can configure using
MODES .
Notepad Notepad variables store notes.
Program Program variables store programs.
Real A to Z and θ.
For example, 7.45 A.