. [dot] key

The  .  key is used as a separator when typing commands like cue numbers.

E.g. you want to store cue number 2.5 in the main cue list:

Store Cue 2  .  5 Please

 

This key is also used as a shortcut. Pressing it twice (like a double click) will take the value of 0% in your programmer for the currently selected fixtures. This is a command called Zero.

E.g. you have selected fixture number 1 and want to put it to 0% all you need to do is to press  .   . .

Advanced functionality

Pressing and holding the while pressing the  .  key will give you the Default command.

This is used to get the default value (the value a fixture have when nothing tells it otherwise). It technically creates a link to this value as if it was a preset.

This can be useful in some rare situations.