I was working on an excel file and was getting some incorrect results with formulas. After some troubleshooting I found what seemed to be empty cells that have some sort of "ghost" data in them. I was able to copy this ghost data to the attached spreadsheet in Cells A2 and A3. Whatever is in...
Looks like they are actually adding JavaScript support into Excel. Not sure how I feel about this yet. We will have to see how it is implemented.
https://www.bleepingcomputer.com/news/microsoft/microsoft-adds-support-for-javascript-functions-in-excel/