Before Origin 2018, formula auto expanded in some cases.
- Sheet index in formula auto expanded to sheet name. E.g. user typed 1!A. It auto expanded to Sheet1!A.
- If type A+0.5 in column A formula, it will become This+0.
System variable @SCVU is added in Origin 2018. By default what you type will be what you see. If you want it to go back to 2017 behavior, set @scvu=0.