How do I completely disable the Spell Checking facility?
Run the ConfigEditorGUI app (you may have to right click and select ‘Run as Administrator’ if you get access denied when trying to save the settings file), and open up the ‘ExamWritePadSettings.json’ file inside it.
Scroll down and select the option "Disable_Ribbon_Btn_Spelling", change the current value from ‘0’ to ‘1’, then click the 'Save Setting' button.
Finally click the 'Save' button on the menu bar.