From EVEWiki
The Wallet is a game term for the repository of a character's credits (as distinct from the standing the player's account has with CCP).
The game interface has a wallet button that allows a display not simply of the total funds available to the character at the moment, but has separate tabs:
- a tab listing credits and debits and their sources
- a tab that displays any currently outstanding buy/sell orders on the market, and their details, as well as total sums of the buy orders (and separately the sell orders) and amount of escrow involved.
- a tab listing changes to buy and sell orders - how much of what was purchased/sold where, and to whom.