É só se dar ao trabalho de LER um pouquinho assim de nada, o cabeçalho do item_db:
# Trade: Trade restrictions. (Default: null)
# Override Group level to override these conditions. (Default: 100)
# NoDrop If the item can not be dropped. (Default: false)
# NoTrade If the item can not be traded. (Default: false)
# TradePartner If the item can not be traded to the player's partner. (Default: false)
# NoSell If the item can not be sold. (Default: false)
# NoCart If the item can not be put in a cart. (Default: false)
# NoStorage If the item can not be put in a storage. (Default: false)
# NoGuildStorage If the item can not be put in a guild storage. (Default: false)
# NoMail If the item can not be put in a mail. (Default: false)
# NoAuction If the item can not be put in an auction. (Default: false)