The Font group of tool-buttons contains 8 toggles and one drop-down option.

The Bold, Italic, and Underscore buttons are regular on/off style buttons.

The Increase/Decrease font size and 3 justification buttons are single-click action buttons.

The font size may be selected with the drop-down arrow button.

Changes to the font face for the active report are made in the Preferences window. See the section Set Preferences for details.