Hello!
I'm currently working on a system for loading and saving text files. My end goal is to have an exported binary for my Pico-8 program. This however introduces some limitations, as exported binaries can not import user-editable files from disk. It is however possible to load files that are dropped from a file explorer into the Pico-8 program. To make it easier for users, I want to open the OS file explorer from within Pico-8. Usually this can be done from the Pico-8 terminal by typing folder, however this command does not appear to work from within a cart.
I'm fairly certain this can be done, as the Picocad binary allows the opening of the file explorer.

Appreciate all answers/ suggestions!

You can call the folder command from within a cart like so:

extcmd("folder")

Although it doesn't seem to be possible to specify which folder you want to open. The documentation says it defaults to opening the current working directory.

Awesome, exactly what I'm looking for. I think folder will open the folder printh defaults writes to, which is exactly what I need. Thank you very much!