Staubus also created an account for every activity. On the left side of this account Staubus recorded the costs of the inputs of the activity. These inputs are the outputs from previous activities within the company and / or outputs from another entity (for instance an outside supplier).
Pseudo city code. In the aviation industry, a pseudo city code, pseudo-city code, or office ID, is an alpha-numeric identifier for a corporate user of a computer reservation system (CRS) or global distribution system (GDS), typically a travel agency. The codes are typically 3 or 4 characters long, (although the Amadeus system uses up to nine characters), and are unique to a specific office of a travel agency. They are used to associate each agency's bookings with the agency, and also to identify private fares available to the agency. Pseudo city codes (PCCs) have many uses in airline industry.
Two-character IATA-assigned code that identifies a carrier on arrival/departure signs, baggage tags, Global Distribution System (GDS), tickets, etc.