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X-Zoom In/Out x4 and Y-Zoom In/Out x4
These two options allow you to zoom in
(or out) by a factor of 4 on either axis.
The factors can be set using the Set
Factors… option, which gives you
access to the view shown above right.
You will also see a CHK mark next to an
option called Recenter. If this is CHKed
then the graph will be redrawn after
zooming in or out with the current position of the cursor as its center.
Changing the x factor is reflected in the menu as you can see in
the second screen snapshot.
Square
This option changes the vertical scale to proportionally match the
horizontal scale so that circles will appear circular rather than elliptical.
Auto Scale, Decimal, Integer and Trig
These four options are duplicates of those found on the VIEWS menu,
and are provided in both places simply for convenience. Information
on them can be found in the section on the VIEWS menu on pages 92.
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