In SAP ABAP Editor (Transaction SE38, SE80), you can change the font and font size by following these steps:

For SAP GUI (Classic Editor - SE38, SE80)

  1. Open SAP GUI.
  2. Go to ABAP Editor (SE38) or ABAP Workbench (SE80).
  3. Click on the “Customizing Local Layout” button (or press ALT + F12).
  4. Select Options.
  5. Navigate to Visual Design > Fonts and Colors.
  6. Under “Fixed-width Font”, choose your desired font and size.
  7. Click OK and restart the editor if needed.

For New ABAP Editor (Eclipse ADT)

If you are using ABAP Development Tools (ADT) in Eclipse, follow these steps:

  1. Open Eclipse.
  2. Go to Window > Preferences.
  3. Expand General > Appearance > Colors and Fonts.
  4. Under “Basic”, look for Text Font.
  5. Click Edit, select the desired font and size, then apply changes.