Xerox 6180N Using LCDS Print Description Language - Page 125

Specifying input parameters BLOCK POSTAMBLE parameter: points to note • If the block delimiter string constant is specified, the block postamble is ignored. • The POSTAMBLE parameter may be overridden if RECORD STRUCTURE is changed through tape label processing. BLOCK PREAMBLE Specifies the length of the operating system portion of the block; that is, the byte offset from the first byte of a tape block to the first byte of the first logical record. Syntax BLOCK PREAMBLE = length Options Table 2-13. BLOCK PREAMBLE parameter options and definitions Option Definition length An integer in the range of 0 to the block length that specifies the number of bytes from the first byte of the tape block to the first byte of the first logical record Default 0 BLOCK ZERO Specifies the End-of-block indicator. Syntax BLOCK ZERO = {NO | YES} Options Table 2-14. BLOCK ZERO parameter options and definitions Option Definition YES Specifies that the end of a tape block is indicated by a value of 0 in the record length field (before applying the record length adjustment). Data that follows the record is ignored through the end of the block. NO Indicates that the end of a tape block is not indicated by a value of 0 in the record length field. Default NO Using LCDS Print Description Language 2-17