Rheos does not just paraphrase your prompt. Every post is built on a formula: why
you are posting, and how you open. Those are the intent and the hook. Both are
optional, and both change the post completely.
On the Start a new post screen, Choose intent opens the Formula tree — “Intent
first, hook if useful.” Pick an intent from the grid and the Hook row underneath
fills with the hooks that carry it; until you do, it just reads “Pick an intent to show
matching hooks.” Clear resets both.
Once Rheos has drafted its ideas you can still change the intent — select a different
intent chip above the prompt and hit Regenerate to redraw all three ideas around
it. The hook is set at the start.
The formula is baked into the draft the moment you pick an idea. To change the angle
after that, ask for a rewrite from the editor or go back and regenerate the ideas — see
comments and edits. Intent — why are you posting?
Rheos carries eight intents:
The intent goes to the model as part of the brief, so it colours the whole draft rather
than just the opening. A Sell post and a Provoke post on the same topic read nothing
alike.
Hook — how do you open?
The first line. Rheos carries 36 hooks, each tagged with the intents it serves, and the
picker shows you every hook that carries the intent you picked — usually between seven and
twelve chips, so expect a wall of them rather than a shortlist. Pick Sell and the row
starts Offer, Pain Point, Transformation Tease, Direct, DM Hook, Social Proof… Pick
Provoke and it starts Number / Stat, Question, Myth / Misconception, Bold Claim,
Contrarian…
Hooks overlap between intents on purpose — This vs That serves Sell, Educate and
Provoke — so the same chip turning up under two intents is not a bug. Hover any chip for
a one-line description of what it does.
Leave the hook alone and Rheos picks one per idea, deliberately picking a different hook
for each of the three so they are not three versions of the same post. Pick one and all
three ideas use it, varying the angle instead.
Try the same prompt twice — once with Provoke, once with Prove. Same topic,
completely different post. It is the fastest way to see what intent actually does.
What Rheos decides for you
Intent and hook are the two slots you fill. How the copy is structured and the ask at the
end are the model’s call, taken from your brand identity, the intent and the hook — there
are no controls for either in the editor.
Length is the exception. Select LinkedIn on its own and a Length slider appears above
the post body, running from short through medium to long. It starts on medium and sets a
soft target the model writes towards. Select anything else, or more than one platform, and
the slider is not there.
If the ending is not what you wanted, that is a rewrite, not a setting: highlight it and
tell Rheos what to change, or use Edit for a pass over the whole post. 
