Make sure a folder is selected — open Settings (⌘,) → Storage and choose iCloud Drive or a folder of your own — and an article is chosen in the sidebar. The current version needs an internet connection the first time the editor loads.
In the folder you picked — every article is a plain .md file you can open in any editor. Pasted images live in the assets subfolder next to them.
Cmd Press autosaves about a second after you stop typing; the toolbar shows the last save time. There is no Save button to forget.
External edits are picked up live and win over unsaved local keystrokes from the same instant. In practice: take turns — your pass, then your co-writer's. Autosave keeps the risky window to about a second.
Settings (⌘,) → Storage → Cloud backup. Sign in with whichever account you want, then flip its "Back up" toggle on. Your local folder always stays the primary copy — cloud backup is a mirror, and it's fine to enable more than one at once.
Yes — the paintbrush icon in the toolbar switches between eight built-in themes, dark by default. Your pick is remembered.
Email jack@happyjack.media — real human, usually same-day.