Bounded, data-only records of presentations actually submitted to a live transport. History never retains source buffers and does not resolve rules, resources, voices, or backend transport.
Whether presentations originating in Aural interfaces enter history. Leave this nil during normal use so interface navigation, opening, closing, help, previews, and status speech do not displace source-buffer feedback. Enable it temporarily when diagnosing presentation inside the Aural UI.
Default Value:
nil
Maximum number of transport-submitted presentations retained for inspection. History records contain frozen data and source names and positions, but never retain source buffers. Set this to zero to disable history.
Default Value:
20