What does a "snap" cue refer to in stage terminology?

A "snap" cue in stage terminology refers to a cue that has no fade time, meaning it is executed immediately and cleanly without any gradual transition. This type of cue is often used in lighting, sound, or stage actions that need to occur sharply and distinctly, making it crucial for moments in a performance that demand instant attention or a sudden change. This immediacy can help underscore drama or highlight pivotal moments, contributing to the overall pacing and energy of the production.

The terminology used in the other choices does not align with the definition of a "snap" cue. While some cues may involve fades for smooth transitions, "snap" cues specifically indicate an abrupt change. Similarly, although cues can be made for entrances and exits, those cues may or may not include fade times, distinguishing them from the characteristic instant nature of a "snap" cue.