title: Discord.py-rewrite wait_for() how do i use?
body: <p>I can not really use <code>wait_if ()</code> the way I want it, can anyone explain how to use <code>wait_for ('message')</code> and <code>wait_for ('reaction')</code>, only by the user of the command? (message translated by Google Translate, forgive me for any error...)</p>