"Limited" is explained where exactly?

[Sergovan 1,440]

I know "Unique" is defined in the rulebook but I can't find where "Limited" is explained, and I have looked through the rulebook, FAQ, and all my inserts. Is it defined in Most Wanted?

 

Not often I get stumped like this...

[DraconPyrothayan 6,107]

It's in with the Epic ships, where it first appears.

 

You can only have the one copy of a Limited upgrade on any given ship, but there's no limit to the number in your fleet.

[Sergovan 1,440]

lol, the only rules sheet I didn't double check and am not familiar with.

[Parravon 5,217]

lol, the only rules sheet I didn't double check and am not familiar with.

Page 7 of the FAQ as well, dude.