The GRAPH | ZOOM Menu

BOX	ZIN	ZOUT	ZSTD	ZPREV
ZFIT	ZFIT	ZSQR	ZTRIG	ZDECM
ZDATA	ZRCL	ZFACT	ZOOMX	ZOOMY
ZSTO	.	.	.	.

BOX	The user enters the upper left and lower right corners of a box in the graph window. This defines the minimum and maximum values of the graph viewing window.
ZIN	(zoom in) Magnifies the graph around the cursor by factors of xFact and yFact. These factors can be set in ZFACT.
ZOUT	(zoom out) Displays more of the graph around the cursor by factors of xFact and yFact. These factors can be set in ZFACT
ZSTD	Displays the graph in standard dimensions; resets the default window variable values to x-Min=y-Min=10, x-Max=y-Max=10, and xScl=yScl=1
ZPREV	Reverses the last zoom operation; window variables revert to previous values.
ZFIT	Recalculates yMin and yMax to include the minimum and maximum y values of the selected functions between the current xMin and xMax.
ZSQR	Sets equal-size pixels on the x-axis and y-axis; adjusts window variable values in one direction so that circles and perpendicular lines look like circles and perpendicular lines.
ZTRIG	Sets built-in window variables for viewing trigonometric functions.
ZDECM	Sets window parameters to preset decimal values.
ZDATA	Sets window variable values to display all statistical data points; adjusts xMin and xMax only; applies to histograms, scatter plots, and stat plots only
ZRCL	Uses window variable values stored in the user-defined zoom-window variables defined by ZSTO
ZFACT	Displays and allows the user to edit the zoom factors xFact and y Fact used by ZIN, ZOUT, ZOOMX, and ZOOMY
ZOOMX	Zooms out by a factor of xFact only; ignores yFact (will modify the window variables yMin and yMax.
ZOOMY	Zooms out by a factor of yFact only; ignores xFact (will modify the window variables xMin and xMax.
ZINT	Sets integer values on the axes;
ZSTO	Stores current window variable values to user-defined zoom-window variables. (see ZRCL)