how do projects work?

[johan0A]

there is no reference to projects in the help file and the open projects command just lets you open a file, cant find an explanation anywhere I'm very confused.

[neurocyte]

A project is just a directory. When you start flow the current project is either the current working directory or set with the --project parameter. You can also open a directory with the open_file command to switch projects. The open_recent_project command (aka "Open project") will let you select a project to switch to from a list of recently used directories. The project state (most recently used files and a few other details) is stored in ~/.local/state/flow/projects and you can remove a project from the recent projects list by just deleting the file there.