Salvager's Code

The Salvager's Code is a set of rules, often cited anti-climactically by Rex, that function as an unofficial code of conduct among the salvagers of Alrest. While only ever quoted by Rex, other characters do reference its existence unprompted, so it's presumably a "real thing" rather than simply a personal invention of his.

Code
Rex quotes seven rules during the game, six during story scenes and one as part of a quest. Any other rules that may exist are unknown.
 * Rule #1: "Swim like a fish, and drink like one too." (Something in Common)
 * Rule #2: "Always help those who help you." (Behind Bars)
 * Rule #3: "Make a girl cry? That's not gonna fly. Make a girl smile? You pass the trial!" (Swooping Artifice)
 * Rule #4: "Open a chest, it might turn out great... But until then, it's just a crate!" (Artifices, Weapons of the Aegis)
 * Rule #5: "Always be-" (Rex gets cut off by Mythra before he can finish this one.) (Together with Rex)
 * Rule #6: "First have a punch-out, then drink to forget. Once you've forgotten, the friendship's all set!" (Memories of This Planet)
 * Rule #7: "Never leave a debt unpaid!" (Nopon Doubloons Ahoy)

Trivia

 * There exists a similar code for Drivers, the Driver's code.