What are "Active fixtures"?

[Dave Jenkins]

In the context of fading, what are "active fixtures"? The fixtures included in this cue? All cues? And what makes them "active?"

Thanks.

https://1drv.ms/u/s!Ar4Y9Yq-yfvolvlp4FV1NiCoO3QJmg

[Mike Daniell]

The Lighting Cue property 'Fade out time for other active fixtures' refers to fixtures with non-zero DMX values in their dimmable channels for fixtures not otherwise referenced in the Lighting Cue. As with all Lighting Cues, this applies only to fixtures for the selected Lighting Device.