             <div style={marginTop: '-12px', marginBottom: '15px', color:'#666'}>
                 <Tip title='Use Markdown' tip={tip}>
                     Shift+Enter for newline.
+                    Double click to edit past chats.
                     Format using <a href='https://help.github.com/articles/markdown-basics/' target='_blank'>Markdown</a>.
                     Emoticons: {misc.emoticons}.
                 </Tip>


    render_input: ->
        tip = <span>
            You may enter (Github flavored) markdown here and include Latex mathematics in $ signs.  In particular, use # for headings, > for block quotes, *'s for italic text, **'s for bold text, - at the beginning of a line for lists, back ticks ` for code, and URL's will automatically become links.   Press shift+enter for a newline without submitting your chat.
        </span>

        return <div>

                     is_prev_sender   = {is_prev_message_sender(i, sorted_dates, @props.messages)}
                     is_next_sender   = {is_next_message_sender(i, sorted_dates, @props.messages)}
                     show_avatar      = {not is_next_message_sender(i, sorted_dates, @props.messages)}
                     get_user_name    = {@get_user_name}
                     sender_name      = {sender_name}
                     editor_name      = {last_editor_name}
                     actions          = {@props.actions}
                    />

        return v

    render: ->
