Team Control Foul Signals

[BillyMac]

Official calls team control foul, let's say an illegal screen.

At spot of foul, signal fist in air, verbally announce color and number, team control foul signal, signal direction and throwin spot (perhaps verbally adding color of team now in possession).

Calling official heads to the reporting area, stops, verbally indicates color, verbally and by two handed signal indicates number, verbally and by signal indicates team control foul (hand behind head), and then indicates spot of throwin (perhaps verbally adding color of team now in possession).

At the spot of the foul (preliminary signals), or in the reporting area, are there any NFHS mechanics that encourage, or discourage, additional clarifying verbiage or signals: block, push, hold, "Illegal screen", etc.?

Does only the verbiage and signal of a team control foul (hand behind head) suffice?

Citations please (please copy and paste, I don't have access to a NFHS mechanics manual).

Same question for IAABO mechanics.