Ah, gotcha! The video is referring to a different product (in beta), "EqualTo Sheets". Sheet Markup uses some of our EqualTo Sheets tech, but it's a different product.
So, regarding EqualTo Sheets:
> What happens with the data I enter?
Data entered into an EqualTo Sheets workbook is saved to the EqualTo server.
This is to some extent the value we provide with EqualTo Sheets: you can just paste the code snippet we provide into your code base and immediately have a functioning workbook that saves changes and supports parallel editing.
> Can I use an API to dump and restore data and formulas?
Yes, we have a bunch of APIs. You can export / import XLSX, as well as read / write individual cells using REST and GraphQL APIs. Some more details:
- https://sheets.equalto.com/beta-readme
- https://sheets.equalto.com/docs/
- Join the open beta (just provide an email address and click on a link in the email you receive): https://sheets.equalto.com/
