add a backup save system in case the engine stops responding

[daveandbambifan1234]

What feature do you want to get added on the base engine?

I decided to request this feature because I don't want to lose my chart data

To test your sight, and reliability, please select the option of what should NOT be requested.

Thing that would not cause problems

[PatoFlamejanteTV]

Pretty cool ngl, but it could lag with 1 MB< charts

[moxie-coder]

there's already an autosave feature in the chart editor, but I could improve it