Update is used for two primary functions, updating a cue and saving the showfile.
Usage
When in a cue, you can still modify light data. If you make a change you like and want to save it into the cue, you can do that with update. You can also quickly save your entire showfile with an shortcut.
Examples
Updates the current cue, saving manual lighting data into the cue list.
Updates the current cue, saving manual lighting data for channel 3 into the cue list.
Pressing and at the same time saves the showfile.
On Keyboard
is mapped to U on a QWERTY keyboard.