Opitx is not your average markdown editor, which are loaded with unnecessary features that either hide your saved files in some database format you can't read or loaded with features that don't work. There are no databases on the back-end and no API calls to cost you hours of work when there is a hiccup in the syncing process. Instead Opitx uses good, old fashioned SAVE and OPEN letting you configure whatever storage scheme works best for you.
Complete documentation available HERE