Trainz/Service Packs



Service Packs are a referring to the way data and often new program code are organized and released as a  which (normally) self-updates (self-installs) a piece of updated computer software.


 * for example had three major Service Pack releases over a lengthy period.
 * Various Trainz release versions, especially those incorporating the most new technology and changes in the data models or game engines have had as many as four.