The King's Company was forced to commission the technically advanced and expensive Theatre Royal playhouse by the success of the rival Duke's Company, which was drawing fascinated crowds with their "moveable" or "changeable" scenery and visually gorgeous productions at the former Lisle's Tennis Court at Lincoln's Inn Fields. Imitating the innovations at Lincoln's Inn Fields, the Theatre Royal also featured moveable scenery with wings or "shutters" that could be smoothly changed between or even within acts. When not in use, the shutters rested out of sight behind the sides of the proscenium arch, which also served as a visual frame for the on-stage happenings. The picture-frame-like separation between audience and performance was a new phenomenon in English theatre, though it had been found on the Continent earlier. Theatre design in London remained ambivalent about the merits of the "picture-box" stage, and for many decades to come, London theatres including Drury Lane had large forestages protruding beyond the arch, often including the thrust stages found in the Elizabethan theatres. The players could still step forward and bridge the distance between performer and audience, and in addition, it was not unusual for audience members to mount the stage themselves.