BroadcastAudienceFilterInput

Saved audiences. Values OR, like every other dimension. Rejected on an audience's own filter, which is what keeps an audience from being defined in terms of another one; on a broadcast's it may sit anywhere in the tree, including under a not to exclude the audience.

Further conditions, all of which must hold. Nests at most two levels: this filter may hold and/or children, and those children may hold their own, but a third level is rejected — the composer renders a row of groups and cannot show anything deeper without changing who the filter reaches.

Alternatives, any of which may hold. Nests at most two levels, the same as and.

A condition to subtract. May name a single dimension and nothing else: no and/or of its own, no second dimension, and no nested not, because negating a conjunction is a disjunction the composer cannot render. Express that as separate audiences instead.