I have now gathered most of the entries from the code to the wiki. See weapons.tbl and ships.tbl from FSwiki.
There are a lot of options that i have absolutely no idea what they do or why they are in the table. For example in the weapons.tbl there seems to be multiple options for defining the model ($Tech model, $Model File, $External Model File, $Model etc. ). So... any help available?
$Tech model: For use in loadout and techroom screens.
$Model file: tells fs2_open to render the model instead of using the laser renderer.
$External Model File: shown on the gunpoint, used with Bobb's external-visible-weapon code.
$Model: Basically the same as $Model file:, included for compatibility with countermeasures as they have been merged with weapons in the code.