The composer writes one post and sends it to whichever accounts you pick. What it can carry has grown well past plain text.
- Threads. Break a post into parts and each network that supports threading gets them in order.
- Polls. Add options and a duration on the networks that take them.
- Images and video. Drag them in and reorder them.
- GIFs. Search without leaving the editor.
- Quote posts. Paste a link to quote it rather than reply to it.
Where networks disagree, the composer follows each one's rules rather than the strictest common denominator. You can also unsync an account and write it a different version, without starting again.