# Lotus 1-2-3 Lotus 1-2-3 is the spreadsheet product associated with the `.123` extension in the notebook. ## Source - [[Scanned_20260730-1806#Page 7 — `Scanned_20260730-1806.pdf`, PDF page 7|Scanned_20260730-1806, PDF page 7]] The crossed “Lotus” before “Notes” reflects a distinction between this spreadsheet lineage and [[Lotus Notes]].