It is used to avoid lock-ups during the intros or varios places in the game, or when you only want to activate codes at a certain time and not constantly have the effect of the code on. It's main purpose is to activate codes with the push of a button.
It is usually necessary to apply for DPT programs through the Physical Therapist Centralized Application Service (PTCAS). Students in DPT programs must complete a clinical internship in an area such as acute or orthopedic care with supervised experience.
Many allopathic med-peds programs have TRI programs that allow residents to construct their schedule in such a way to incorporate what is required into their first year of med-peds training so residents receive dual credit for their first year of med-peds training as an osteopathic intern year/allopathic med-peds year.