SYNTAX            : RANGE ;D

RESULTING ARGUMENT: Date, format YYYMMDD, composed of BDATE with an offset
                    of DAY days.

FUNCTION          : Add days to a date value.

RANGE             : BDATE,DAY
                    BDATE         : the base date, format YYYYMMDD
                    DAY           : the offset in days to be applied

EXAMPLE           : ;d , -1 ;d ;d
                    Display what day it was yesterday (1=monday 7=sunday).

MATRIX