Dramamakin

Backstage or offstage. The areas of a theatre that are not part of the house or stage are considered part of backstage. These areas include dressing rooms, green rooms, offstage areas (i.e. wings), cross-overs, fly rails or linesets, dimmer rooms, shops and storage areas.

They are in charge of moving scenery, special effects such as trap doors or helping actors "fly," keeping track of props, and even operating lighting and sound systems. Most are employed on a per-show contract basis, but many midsize and large theatres use the same crew for nearly every production.