Lighting for the Stage Crossword

The horizontal metal (steel or alloy) tube hung from flying lines (or forming part of a grid) from which lighting equipment and scenery etc. may be suspended.
A rotatable attachment consisting of two or four metal flaps (hinged) which is fixed to the front of a Fresnel or PC type lantern to cut off the beam in a particular direction(s).
Complete absence of stage lighting.
Light coming from upstage, behind scenery or actors, to sculpt and separate them from the background
Adding or subtracting to create colours
The direction given when you walk to the front of the stage.
The direction given when you go to the back of the stage.
Wiring, temporarily rigged, to carry electrical current.
An increase, diminishment or change in lighting
When all the lanterns in the rig are angled in the correct direction, and have their beam of light defined.
A type of lantern which produces an even, soft-edged beam of light through this type of lens.
The type of material used to create colours in some lights.
Type of light that can be programed to create lots of colours using the different settings.
Each instrument is capable of a massive variety of effects which are operated live via a moving light control desk, or can be pre-programmed by a standard memory lighting desk.
Type of lantern which produces an intense beam of light.
When you are standing on the side of the stage.
When you are standing on the other side of the stage.
A framework of alloy bars and triangular cross-bracing providing a rigid structure, particularly useful for hanging lights where no permanent facility is available.