In full short, current consumption nearly equal to set current of dc power supply. When there is short in Vph power or Vbat rail, it is called full short. But when there is short in secondary lines (output of PM ic), auto current consumption is less than set current of dc power supply. It is called as half short.

Technically there is no half or full short. It is either short or no short. But to understand better, this types of terminology is used by trainers.