General Codes
Code 1-Alpha-Zero
Indicates a starship in distress.
Code 1
Signaled either a total or imminent disaster, a possible invasion, or indicated that the Federation was either currently or about to be engaged in open warfare with a hostile power. The code required all Starfleet personnel within the affected area to immediately assume tactical alert. It was also colloquially known as "Defense Alert", or a "Priority One Alert".
Code 47
An ultra-secure communications protocol, for captain's eyes only. This code was so secure that all traces of a Code 47 transmission or communication were automatically wiped from all computer records.
Code 710
In a state of imminent threat, the captain is authorized to initiate the destruction of their starship by allowing matter and antimatter to mix in an uncontrolled manner. This order is to be executed only as a last resort to prevent the ship or crew from being captured by enemy forces.
Transporter Codes
Transporter Code 14
A transporter procedure used to destroy an object.