 1P     = PRIX                               PRICES
 0F1/D1   TARIF(AVION) / DISTANCE(AVION)     FARE(AIR) / DISTANCE(AIR)
 0F2/D2   TARIF(TRAIN) / DISTANCE(TRAIN)     FARE(RAIL) / DISTANCE(RAIL)
 0F3/D3   TARIF(BUS) / DISTANCE(BUS)         FARE(BUS) / DISTANCE(BUS)
 0F4/D4   TARIF(VOIT.) / DISTANCE (VOIT.)    FARE(CAR) / DISTANCE(CAR)

 2N     = RSEAUX                            NETWORKS
 0D1/T1   DISTANCE(AVION) / TEMPS(AVION)     DISTANCE(AIR) / TIME(AIR)
 0D2/T2   DISTANCE(TRAIN) / TEMPS(TRAIN)     DISTANCE(RAIL) / TIME(RAIL)
 0D3/T3   DISTANCE(BUS) / TEMPS(BUS)         DISTANCE(BUS) / TIME(BUS)
 0D4/T4   DISTANCE(VOIT.) / TEMPS(VOIT.)     DISTANCE(CAR) / TIME(CAR)
 0DIST1   DISTANCE(AVION)                    DISTANCE(AIR)
 0DIST2   DISTANCE(TRAIN)                    DISTANCE(RAIL)
 0DIST3   DISTANCE(BUS)                      DISTANCE(BUS)
 0DIST4   DISTANCE(VOIT.)                    DISTANCE(CAR)
 0FREQU1  FRQUENCE UTILITAIRE (AVION)       UTILITARY FREQUENCY (AIR)
 0FREQ2   FRQUENCE (TRAIN)                  FREQUENCY (RAIL)
 0FREQ3   FRQUENCE (BUS)                    FREQUENCY (BUS)
 2NUITA   NOMBRE DE NUITS                    NUMBER OF NIGHTS

 3S     = SOCIO-CONOMIQUES                  SOCIOECONOMIC
 0REVE    REVENU                             INCOME
 0LANGFR  SIMILARIT DE LANGUE O-D           LANGUAGE SIMILARITY O-D
 0ODREG   O-D DANS LA MME PROVINCE          O-D WITHIN THE SAME PROVINCE

 4ET    = ET CETERA                          ET CETERA
 0CONSTANTCONSTANTE DE LA RGRESSION         REGRESSION CONSTANT

