It's not a text editor in it's own right, you can use it with nano. It's simply a tool to help create and format journal entries. I'd assume you can set a directory they're stored in, and then use the command from anywhere, but didn't dig into the documentation just yet. It can also handle encrypting those entries if you choose.

I dunno, maybe just let people have nice things? ¯\_(ツ)_/¯