Further to my previous post on Repl.it getting started. I have found another useful feature within this that could be very helpful when you want to keep a project but go in a different direction, so for example to test out a new feature. This is known generally as forking.
You can do this from your main my repl screen. If you click on the 3 dots (vertical) on the far right of the screen, you have the option to fork your project. This will create a copy and keep all files intact. This is also helpful if you have created support files, like I have with some of the Learning BASH posts I made over the past few days.
Hope this update is helpful.
I can also be contacted on friendi.ca