1001 Characters: "ships systems" skill

[Stainless]

I've just noticed that in the 1001 Characters supplement, there are a number of skills entries for, "Engineer (ship systems)" p. 125, and "Trade (ship systems)" pp. 149 & 150.

However, there is no mention of "ship systems" in the core rule book (I just did a keyword search through the pdf file).

Does anyone know if these skill specializations are in any of the supplements (other than 1001 Characters) or is it another example of an editorial/proof-reading "feature"?

 

[apoc527]

I suspect it is meant to indicate a choice of the ship systems specialities (m-drive, j-drive, life support, etc). It is part of the "customizable" characters of the book. I think it was intentional and not meant to refer to a non-previously described specialty.