Write an X post or a thread

1. Click into "What is happening?!", or press Post on X to open the compose box. The panel switches to post, tagged X post.
2. Choose Single or Thread next to on x under more Format, hashtags and length. A thread is 3 to 7 numbered posts. On a single draft you can also click Split into thread.
3. Press Enter. A thread shows each post in its own box, with a count like 5 posts · longest 268/280.
4. Click Insert into post box. A single post goes straight in. For a thread, Riff fills the boxes X has open, usually just the first, and says Filled 1 of 5 posts. Press + on X 4 times, then press Insert again to fill the rest. Press + that many times, press Insert again, and every box fills.
5. Press Post, or Post all, yourself.

Riff doesn't press + for you: X ignores a scripted click on it and drops the text Only part of my X thread went in. Links count as 23 characters, and with Hashtags on Riff adds up to 2.