When Viewing Type is Scale to
Fit, the program automatically controls the scaling factor
to fit all visible objects in the available space.
When Viewing Type is Scale or Screen
Scale, do any of the following to change the scaling:
Under Scale Type click Ratio,
then in the Scale text box type the ratio
between modeling units and units on the page (for example, 2:1 or
1:100). For actual size type 1:1.
Under Scale Type click Percentage,
then in the Scale text box type the percentage
of modeling units to use on the page. For actual size type 100.