HP 40G Divides horizontal and vertical scales, By the X-factor and Y-factor. For, See Set Factors

Option	Meaning (Continued)
In	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)
Out	Multiplies horizontal and vertical
	scales by the X-factor and Y-factor
	(see Set Factors).
X-Zoom In	Divides horizontal scale only, using
	X–factor.
X-Zoom Out	Multiplies horizontal scale, using
	X–factor.
Y-Zoom In	Divides vertical scale only, using
	Y–factor.
Y-Zoom Out	Multiplies vertical scale only, using
	Y–factor.
Square	Changes the vertical scale to match the
	horizontal scale. (Use this after doing a
	Box Zoom, X–Zoom, or Y–Zoom.)
Set	Sets the X–Zoom and Y–Zoom factors
Factors...	for zooming. Includes option to
	recenter the plot before zooming.
Auto Scale	Rescales the vertical axis so that the
	display shows a representative piece of
	the plot, for the supplied x axis
	settings. (For Sequence and Statistics
	aplets, autoscaling rescales both axes.)
	The autoscale process uses the first
	selected function only to determine the
	best scale to use.
Decimal	Rescales both axes so each pixel = 0.1
	units. Resets default values for XRNG
	(–6.5 to 6.5) and YRNG (–3.1 to 3.2).
	(Not in Sequence or Statistics aplets.)

Aplets and their views 2-9