I am entering info into a spreadsheet and made a mistake, I was trying to delete a column of entries so I selected all info in the N column, right-click and selected DELETE then a small box titled DELETE opened and I chose "Entire Row" and this shifted all cells up by one so my entire no.1 row dissapeared. Looking at the menu at the top of the sheet I am not seeing an UNDO icon, any way I can recover that no.1 row please?