Ah-ha

An inhalation and an exhalation; a cadenza of the breath; a suspension and a resolution; a momentary off-balance followed by a return to balance; a moment of discovery or recognition; a movement to a new understanding; a change in consciousness; an expression of the character's inner action. An important tool for making comedy work; many little ah-ha's. Tragedy is one long sustained ah-ha.

Glossary
Jonathan Paul Cook 2010