Editing a message you have sent
Edit a message you already sent in a Rhazes chat to change what you asked, and why editing is not always offered further back.
Updated
Editing
Select Edit on a message you sent, change the text, and send it again. Rhazes regenerates its reply from the corrected message, replacing the old response.
Why it is not always offered
Editing is available back to the most recent point the conversation can still safely be rewritten from. Once something later has acted on the original message, that message can no longer be edited, because changing it would contradict work already done from it.
When that happens, ask your follow-up as a new message instead.