Reminds me of the Canon Cat. You put a disk in and it would store everything you typed as a single, long document on the disk. You could put dividers in the doc

Reminds me of the Canon Cat. You put a disk in and it would store everything you typed as a single, long document on the disk. You could put dividers in the document to separate sections. Parsers in the Cat's system software allowed for specific actions to be taken on parts of the document; for example, tabular numeric data could be identified and spreadsheet-like functionality could be enabled over that data. The whole document was searchable via a pair of LEAP keys which, when held down while typing, would search for what was typed. Jef Raskin of Macintosh fame was responsible for this UI. https://en.wikipedia.org/wiki/Canon_Cat https://en.wikipedia.org/wiki/Canon_Cat