When you are hunting for a specific fixture, sometimes it is easier to flash through a bunch of them until you identify the one you want on stage. Using this Tool allows you to quickly flash lights on the stage and not affect fixtures that are currently captured by setting them to Full and Out repeatedly.
Access the Flash tools by pressing and holding the [TOOLS] button (or [T] on the QWERTY keyboard) then select either [S2] for Flash Fixture or [S3] for Flash Output (you may need to select <more> to see Flash Fixture on [S2]).
Using the [S2] or [S3] buttons to step
forward or backwards from the current fixture. The fixture that is shown
in the edit box will appear like this 
in the Fixture
Grid showing that is flashing. If you are flashing Outputs (DMX),
there is no change to the fixture grid.
Hint:
When the dialog box is open, use the Wheel to roll through the fixtures numbers
Once you select the Flash tool once, you can toggle this tool on and off by pressing the [TOOLS] button (or [T] on the QWERTY keyboard)
Select the fixture first, then press Tools to automatically fill the Fixture edit box
Once you press Enter to close the dialog box (or toggle the Tools button), the last fixture in the edit box will be Selected ready to set a level
After typing in new values into the number box, if you press Enter, the selected fixture (or output) will flash. You can then enter another number and press enter again and the dialog box will not close. If you press Enter twice, the dialog box will close.
You may want to check out the Highlight/Lowlight tool as well.
See Also: