HP 49g Pocket Guide

6
Reserved Names and Constants
You should avoid using certain names for variables, because
their contents are interpreted by the calculator in set ways.
Some examples are given in the following table.
Name Use
0DETYPE The differential equation type used in the
DESOLVE command.
ALRMDAT Data for current alarms.
CST Current contents of a custom menu.
d# Indicates a user-defined derivative, where #
is the number of the defined derivative.
EPS The smallest real value below which the
calculator rounds to zero for some
operations, for example EPSX0.
EQ Current equation, plotting and numeric
solving.
ERABLEMSG Information relating to unevaluated
integrations.
EXITED If this variable contains a program, the
program runs whenever the command line
editor session is ended.
EXPR Current expression, symbolic operations.
IERR Uncertainty in current integration.
IOPAR Current parameters for I/O operations.
MODULO The value of the current modulo setting.
n1, n2, Integer coefficients used by ISOL.
PPAR Current parameters for plotting.
PRTPAR Current parameters for printing.
s1, s2, Sign coefficients used by ISOL and QUAD.
ΣDAT Current matrix of data used for statistics.
ΣPAR Parameters for statistics calculations.
PRIMIT The last computed antiderivative.
REALASUME A list of variables that the computer algebra
system assumes are real values.
STARTED If this variable contains a program, the
program runs whenever the command line
editor session is started with EDIT EDITB,
VISIT, VISITB, or ] in RPN mode.
STARTERR Used to customize error message displays.
STARTEQW Used to apply a customized operation to a
selected component in Equation Writer.
STARTOFF If this variable contains a program, the
program runs whenever the calculator turns
off automatically.
STARTUP If this variable contains a program, the
program runs after a warm start.
TOFF Sets the number of ticks before the
calculator automatically turns off.
TPAR Current parameters for viewing tables.
VPAR Current parameters for viewing 3-D plots.
VX The default variable used in symbolic
operations.
ZPAR Zoom parameters in plotting.
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HP 49g Specifications

General

Brand	HP
Model	49g
Category	Calculator
Language	English