How to modify fonts in TOAD Editor?
Change font size, font face, font color for the Editor through this option:
1. In the menu select View | Options, go to the Editor | Behavior section.
2. Look for the Languages section, select PL/SQL (and if you are editing order languages, select the option accordingly) and hit Edit button.
3. This opens another window. Go to the Highlighting tab.
4. Ensure Default is selected in the Styles and choose Custom Font for Style Type.
5. Hit the Custom font button and make changes to the font.
6. OK out of the options windows.
7. The font changes will be reflected on the editor immediately.