The theatre curtain is a large piece of fabric that is used to separate the stage from the audience. It is usually made of heavy material and is often decorated with intricate designs. The term 'DROP' is used to describe the action of the curtain being lowered to begin a performance. This is done by pulling on ropes or using a motorized system. The theatre curtain is an important part of the theatrical experience, as it helps to create the atmosphere and set the tone for the show.