The principal focus
in the chapters on the eighteenth through twentieth centuries is on the acting styles and notable performances of such major actors and actresses as David Garrick, Sarah Siddons, Edmund Kean, the Booths, Henry Irving and his leading lady Ellen Terry, and Laurence Olivier.
In a sense, though, none of this matters, because continuous quality improvement (CQI) has not been OBRA's principal focus
If the principal focus
is short-term, then the long-term benefit may not, by definition, be significant.
In the traditional urban theatre, impacted by adjacent context, the entrance facade usually became the principal focus
, leaving the troublesome volumes containing the vast machinery of the stage and the acoustic chamber of the house safely buried out of immediate view.