This relates to how every NPC Merchant will rely on the Showbartermenu for selling you items. I want to know how I can edit that barter menu, for the reason below.

"So there's tabs: , Weapons, Apparel, Aid, Misc and Ammo. Could someone also add two tabs for "Mods" and "Cards". While the weapon mods appear in Weapons, it's kind of hard to tell at first glance. Cards on the other hand don't even appear in Misc. They only appear in the Merchant name tab. By giving them both their own tab, the Merchant's inventory is a little more organised and easier to navigate."

So in other words, I'm trying to find the Barter Menu in the GECK so I can edit and add those two tabs and associate certain items with those tabs. Help anyone?