These low-level commands are rarely used directly by users, and most functionality is provided by format files (predumped memory images of TeX after large macro collections have been loaded).
Ове команде су ниског нивоа и ретко се користе од стране корисника, а већина њих обезбеђује функционалност формата датотека (predumped memory images of TeX after large macro collections have been loaded).