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NPC ships and Trade Reservation explanation by Burnit! (link)
NPCs for hire by euclid (link).
Smalltalk and Trade Agent guide by Sparky Sparycorp and Snafu_X3 (link).
Snafu_X3's Guide to visually ID 'roid types is here: XRebirth forum link direct link: MS Word 2003 doc
Station Match Finder, for matching ware production and needs by EuRoKa (link).
Temporary Local Security IDs are discussed here.
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