Coordinate explicit previews without owning their feature-specific content. Speech previews stop earlier output, queue one concrete plan or caller-built sequence, and dispatch once. Cue-only previews stop speech but bypass the speech queue, presentation history, and training hooks.
How physical voice comparisons identify their samples. ‘names’ includes the engine and voice; ‘brief’ uses only the comparison letter or sequence number; nil omits labels. The comparison sentence itself is identical for every sample.
Default Value:
names