HP 39gII User Manual page 46

Zoom options
36
Press , select an option, and press
is not displayed, press
are available in all apps.
Option
Center on
Cursor
Box...
In
Out
X In
X Out
Y In
Y Out
Square
Set
Factors...
Meaning
Re-centers the plot around the
current position of the cursor without
changing the scale.
Lets you draw a box to zoom in on.
Divides horizontal and vertical
scales by the X-factor and Y-factor.
For instance, if zoom factors are 4,
then zooming in results in 1/4 as
many units depicted per pixel. (see
Set Factors...)
Multiplies horizontal and vertical
scales by the X-factor and Y-factor
(see Set Factors...).
Divides horizontal scale only, using
X-factor.
Multiplies horizontal scale only,
using X-factor.
Divides vertical scale only, using
Y-factor.
Multiplies vertical scale only, using
Y-factor.
Changes the vertical scale to match
the horizontal scale. (Use this after
doing a Box Zoom, X-Zoom, or
Y-Zoom.)
Sets the X-Zoom and Y-Zoom factors
for zooming in or zooming out.
Includes option to recenter the plot
before zooming.
. (If
.) Not all options
Apps and their views