say - chat command. You can bind it like bind X "say menu"
say menu — Main menu
say class — Change race
say ii — Item description
say drop — Drop item
say shop — Open shop menu
say skills    — Show your skills
say help — Open help menu
say who — Players list with races, levels and items
say xp — Show experience points
say reset — Reset skills points and open skills menu

say buyitem — To buy item directly
say upgrade — To upgrade item directly
say zal — To buy Zal item directly

All commands is working in console. Except drop, use drdropitem in console