It is dismissive of theatrical conventions, and clear in its intention and delivery, despite being a work in progress.

Of course, if playwrights benefited from the efficiencies of allknowing spirits, the ghosts themselves also benefited from theatrical conventions.

Tuesday Touretteshero's glorious Backstage in Biscuit Land smashes theatrical conventions at the Pit at the Barbican, London, from tonight.

There is scarcely one of the theatrical conventions which the public have been accustomed to accept that he employs.