The Handbook is divided into five ‘parts’, the first called ‘Texts’, the second ‘Conditions’, third ‘Works’, fourth ‘Performances’, and the fifth the curiously titled ‘Speculations’. Each one of these parts contain a series of essays generally linked to the title of the part, but there appears to have been no editorial control or programme to cover all the expected areas of a subject; rather, there is an assemblage of a series of essays touching, sometimes from afar, the subject as it could be most generally conceived.