# Blackout

Source: https://help.malighting.com/grandMA2/en/help/key_keyword_blackout.html
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Blackout is a function used to force zero values on output for dimmer parameter of channels and fixtures. Fixtures with "React to Master" = off in the fixture edit menu do not react to Blackout. As long as Blackout is enabled the "B.O." button is on i.e.,** ** it is permanently burning.

To execute this keyword press the key B.O., or type **Blackout** or the shortcut **Bl** into the command line. 

## Syntax

Blackout

Blackout On

Blackout Off

 

Blackout is a toggle function. This means that entering Blackout without any helping keyword will toggle Blackout mode on/off.

 

## Examples

 

\[Channel]> Blackout On

Turns on Blackout mode.

Blackout On

Command line response