https://gfy.com/showthread.php?t=1034418
a letter to "cease and desist" is a double negative,
its a bit like saying "you must stop and stop" (????????????)
either they want you to cease, or they want you to desist,
or do they want you to cease desisting, or desist ceasing (i think that only happens when you are dead)
but to cease and desist obviously just means carry on as before.