Xerox 6180N Using LCDS Print Description Language - Page 124

Specifying input parameters Default 1 BLOCK LTHFLD: point to note • If the size is set to 0, the block length field is not considered to be part of the block; and the length of a block on the tape is the actual physical block length. • The LTHFLD parameter may be overridden if RECORD STRUCTURE is changed through tape label processing. BLOCK OFFSET Specifies the location of the block length field. Syntax BLOCK OFFSET = value Options Table 2-11. BLOCK OFFSET parameter options and definitions Option Definition value Specifies the number of bytes that the block length field is offset from the first byte of the block. The value is an integer in the range 0 to LENGTH-LTHFLD -1. Default 0 BLOCK POSTAMBLE Specifies the length in bytes of the extraneous data at the end of each tape block, measured from the end of the block backwards to the end of the last logical record. Syntax BLOCK POSTAMBLE = length Options Table 2-12. BLOCK POSTAMBLE parameter options and definitions Option Definition length An integer in the range of 0 to the block length that specifies the number of bytes that follow the last logical record to the end of each tape block. Default 0 2-16 Using LCDS Print Description Language