In Australia, children undergo twelve years of formal education (plus Preschool, Kindergarten and/or a preparatory grade or Prep), usually starting at age four, five or six, and finishing at age 16, 17 or 18. The Years are numbered from 1 to 12.
Modular PSUs are also referred to as Full(y) Modular, and semi-modular ones are usually just called Modular. Sometimes you get less cables than your modular PSU can accept, Enermax (for example) love doing this.
An RTU is a type of AHU. AHU stands for Air Handling Unit and the acronym RTU means Rooftop Unit. The Roof Top Unit is an outdoor AHU. As RTUs are mounted on the roof, there is no concern about creating extra space indoors for it as would be the case for the other types of AHU.