About the Modify window

In the Modify window, you can select a unit of measure for the representation style table (RST).

Important: If the associated map is in a different scale, selecting a unit of measure may affect the representation of the map.

Under Modify Units:

From: The current unit of measure.
To: The unit of measure to which you want to change for the RST.
After you select the unit of measure, in the list below, you can select a scale. To use a custom scale, select Custom, and then in the box beside Scale 1:, type the scale you want.