HP 38g Graphing Calculator - Manual (Page 185)

Xcross
AllApkts
Defines the horizontal coordinate of crosshairs. Only works
with TRACE off.
In a program, type
n {{STO^}}Xcross
Ycross
All Aplets
Defines the vertical coordinate of crosshairs. Only works with
TRACE off.
In a program, type
n {{STO^}}Ycross
Xtick
All Aplets
Defines the distance between tick marks for the horizontal
axis.
From the Plot Setup input form, enter a value for xtick,
or
In a program, type
n {{STO^}}Xtick
Ytick
All Aplets
Defines the distance between tick marks for the vertical axis.
From the Plot Setup input form, enter a value for Ytick.
or
In a program, type
n {{ST0^]]Ytick
Xmin / Xmax
All Aplets
Defines the minimum and maximum horizontal values of the
plot screen. Appears as the xrng fields (horizontal range) in
the Plot Setup input form.
From Plot Setup, enter values for XRNG.
or
In a program, type
n {{STo^jjXmin
n ¡¡sTO^JlXmax
Programming 8-33