What is a 'live SQ' in performance terminology?

In performance terminology, a 'live SQ' refers to an effect operated on cue. This means that during a live performance, specific effects—such as lighting, sound, or other technical elements—are activated in response to cues given during the performance. These cues are essential for ensuring that all the various aspects of the production come together at the right moment, contributing to the overall impact and flow of the performance.

Choosing this answer highlights the importance of timing and coordination in live theater, where every element must be perfectly synchronized to enhance the audience's experience. The other options, while related to performance, do not encapsulate the specific function of a 'live SQ' as effectively.