Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Theater drapes and stage curtains are pieces of cloth that fully or partially cover a stage. They come in many different types. The front curtain (also called a grand drape, act curtain, house curtain, house drape or main drape) (tabs in the UK) hangs upstage of the proscenium arch. It is usually made from heavyweight material as its purpose is to hide the stage and muffle sounds. In smaller theatres, they usually consist of two curtains which part horizontally (known as a traveler). In larger theatres, they usually open vertically, disappearing out of sight into the fly tower. This style of opening is known as a guillotine reveal, after the famous execution tool. A single curtain which covers the entire opening by moving horizontally is called a wipe. A tab or tableau curtain gathers the two sections of fabric up and to the sides (in a "French Action") and usually forms a draped effect when it is opened.