it is cut in half and trimmed to form two separate digest books those books are then processed on both the 34 a 34 and 34 b 34 sides 40 and 52 according to the 34 2 out 34 process of the present invention or on a single side according to the 34 1 out 34 process programs which perform 1 out processes of the present invention read data from a magnetic tape containing address records corresponding to a pallet or a sack of mail a 34 pallet 34 for purposes of the invention is a collection of packages for the same high level destination such as a sectional carrier facility that typically weighs between 600 and 1800 pounds a 34 sack 34 is a collection of packages for the same high level destination but with a much smaller capacity typically between 20 and 50 pounds the program reorganizes the address records for each pallet or sack and outputs them to an output or resequence data file and ultimately a resequence data tape for use by main computer 70 to control manufacture of books on line 10 for convenience address records are referred to sometimes hereinafter as 34 books 34 sets of records corresponding to packages of books are referred to as 34 packages 34 and sets of records corresponding to a pallet or sack are referred to as 34 pallets 34 or 34 sacks 34 pallets or sacks are sometimes referred to as 34 makeups 34 although books of the same version are paired within packages books are never removed from their package according to the 1 out processes packages may however be renumbered and displaced in sequence within a pallet or.