OptionaldescriptionOptional detail text rendered under the title.
Empty sanitized descriptions are omitted.
OptionalmarkerExplicit one-cell marker rendered before the title or description.
OptionalmarkersSemantic marker mapping.
Every marker must be exactly one terminal cell wide.
OptionalshowWhether the semantic marker is rendered.
OptionaltitleOptional primary alert text.
OptionaltoneSemantic status used to select a marker.
OptionalwidthMaximum rendered width measured in terminal cells.
Options accepted by renderAlert.