Now you make me feel old. I too have vague memories with Lotus 123. In the days when spreadsheets were one big mother of a spreadsheet and we had to make our own pages in descending diamonds so that inserting rows or columns did not mess it up. And then we got windows wow, and then we got excel wow, and never have I used the scroll lock key since. Geez I feel old now.
Just noticed my keyboard doesn't even have a scroll lock!