Which personalization options are available in the SAP GUI?

You can change the font size (within limits) in the SAP GUI
You can have system messages displayed in a dialog box
You can suppress the display of pictures in the SAP GUI

Numerous personalization options are available, using the Extras menu, the Customizing of local layout pushbutton, and using the status bar and HelpSettings.... End users cannot, however, change the size of input fields. You also cannot use the SAP GUI to display a picture of your choice on the SAP Easy Access screen.