The Font dialog has five sections and enables you to change the Font Attributes. Those are:

Font
Font Style
Size
Color
Sample

The Font section enables you to select font from the list of available fonts. All the TrueType fonts installed in your system are listed here.

The Font Style section enables you to choose style of your font. These styles can be: Normal (Regular), Bold, Italic and Bold Italic. Depending on the selected font some of the options can be unavailable.

The Size section enables you to select size of the selected font. Since the fonts are TrueType, you can select or type any size.

The Color section enables you to apply color to your font. These colors can be selected from the color palette. The color library pull down menu lets you select a color library from the Color Libraries available in the program.