The Text branch under Configuration - Display has the following options:
Color and Font Setup
Users may specify color preferences for contrasting colors used for text compares. Clicking on the colored rectangle by a text label will present a dialog from which the user may select the color to be used for the indicated item.
Load Color Scheme
Two color schemes have been predefined. If desired, users may select between these by choosing one of the options offered in the dropdown.
Mark Empty Lines
If this option is selected empty lines will be indicated in the compare panes with alternating blue and white vertical lines. If this is not selected, the background color for the compare panes will not change when empty lines are encountered.
Font Setup
Pressing the Font Setup button presents the default system Font dialog where the user may define the font to be used for text compares including options to set the font style, size, and script.
Highlight Active Frames Only
If this option is selected only the two active frames in a 3-way compare would show highlighting for character differences. If this is not selected then all three frames would be highlighted to indicate character differences.
The Use Defaults button may be pressed to restore the default colors/font settings for text compares.