A theory of explanation might treat explanations in either a realist or an epistemic (that is, anti-realist) sense. A realist interpretation of explanation holds that the entities or processes an explanation posits actually exist--the explanation is a literal description of external reality.
Officers in pay grades O-1, O-2, and O-3 with more than four years of prior cumulative service in an enlisted or warrant officer grade are paid increased wages using the special pay grades of O-1E, O-2E, and O-3E, respectively.
A pay grade or salary grade scale is a structured pay format where new employees are placed at a given pay level based on their level of education and work experience related to the position.he federal government's General Schedule is a prominent pay grade system. Many federal employees at all levels are paid based on this schedule, called the GS for short. It has 15 pay grade levels and 10 steps at each level to allow for some job level pay variance.