compatibilidad con versiones anteriores(The capability of source code or programs developed on a more advanced system or compiler version to be executed or compiled by a less advanced (older) version)
cálculo hacia atrás(Calculation of late finish and late start dates for project activities, determined by working backward from the project's finish date)
programación regresiva(A method for determining a production schedule by beginning with the date the order is required to be ready and working backward to the date work must begin in order to meet the required due date)