My dad used Lotus 1-2-3 almost every day since the DOS days and he's super fast drawing and doing stuff with the keyboard (not so much nowadays with Libre Offic

My dad used Lotus 1-2-3 almost every day since the DOS days and he's super fast drawing and doing stuff with the keyboard (not so much nowadays with Libre Office or MS Office) and he is used to do almost everything with a spreadsheet: floorplans, leaflets, diagrams... Don't even try to get him to use a CAD or vector drawing software :D