Drawing Commands - HP 39gs User Manual

RUN
STOP

Drawing commands

ARC
Programming
IFERR...THEN...ELSE...END allows a program to intercept
error conditions that otherwise would cause the program
to abort. Its syntax is:
IFERR trap-clause
THEN clause_1
ELSE clause_2
END :
Example
IFERR
60/X Y:
THEN
MSGBOX "Error: X is zero.":
ELSE
MSGBOX "Value is "Y:
END:
Runs the named program. If your program name contains
special characters, such as a space, then you must
enclose the file name in double quotes (" ").
RUN "program name": or RUN programname:
Stops the current program.
STOP:
The drawing commands act on the display. The scale of
the display depends on the current aplet's Xmin, Xmax,
Ymin, and Ymax values. The following examples assume
the hp 39gs default settings with the Function aplet as the
current aplet.
Draws a circular arc, of given radius, whose centre is at
(x,y) The arc is drawn from start_angle_measurement, to
end_angle_measurement.
ARC x;y;radius;start_angle_measurement ;
end_angle_measurement:
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