Chełmno extermination camp
Himmler was so sure that almost everyone knew what "special treatment" meant, and ordered for it to be replaced with the even more vague ("guided through"), even though the document in question was top secret. The camps in question in the General Government were Treblinka, Sobibor and Belzec extermination camps, and Majdanek concentration camp. The only camp in the Warthegau was Chełmno extermination camp.