The chat history for rooms?
How about some session-specific options? For example, just now the option is limited to x number of lines for all time. Much better would be “a max of how many lines for the current session.” Once everyone’‘s out, that history’'s toast.
I think that’'s important for a few reasons. Or how about “all history for a specific session.”
Best – ideal – would be if there were a button in the client that would let an Owner of Admin of the session click “start history now,” “pause,” and so forth. Leave that control entirely to a session manager.