Loading and saving Excel files

Documentation in progress

More guides coming soon. This how-to will cover the specifics of .xlsx round-tripping — formula coverage, chart preservation, conditional formatting, and the cell-styling map between Excel and MathJet.

What this guide will cover

• Opening an .xlsx file directly as a spreadsheet in MathJet
• Round-tripping (open, edit, save) without losing formulas or formatting
• Reading sheet/range data into a script via the polyglot formula bar
• Writing analysis results back to specific cells
• Known limitations of the .xlsx round-trip

In the meantime, the short version is: File → Open an .xlsx and it just works. Formulas, charts, and most cell styles round-trip intact. Use the spreadsheet view as a first-class data source rather than as an export target.