Advantage/Disadvantage

[Jurassic Referee]

Originally Posted by gslefeb

What rule specifically uses the word(s) advantage / disadvantage ?

At the front of the NFHS rulebook is a preamble called "THE INTENT AND PURPOSE OF THE RULES". In that is found this statement:
"Therefore, it is important to know the intent and purpose of a rule so that it may be intelligently applied in each play situation. A player or team should not be permitted an advantage which is not intended by a rule. Neither should play be permitted to develop which may lead to placing a player at a disadvantage not intended by a rule."

Self-explanatory and been there forever.