Specifying input parameters

BLOCK command

The BLOCK command defines block length characteristics and recording modes for offline data sources.

BLOCK command parameters

The following table summarizes the BLOCK command parameters.

Table 2-4. Summary of BLOCK command parameters

Parameter

Specifies

Offline

Online

DJDE

 

 

 

 

 

 

 

 

 

 

BLOCK ADJUST

Specifies the adjustment value that is added to or

Y

N

N

 

subtracted from the content of the block length

 

 

 

 

field.

 

 

 

 

 

 

 

 

BLOCK CONSTANT

Specifies that the block delimiter constant and all

Y

N

N

 

subsequent data are ignored until the end of the

 

 

 

 

block.

 

 

 

 

 

 

 

 

BLOCK FORMAT

Specifies the length field recording mode.

Y

N

N

 

 

 

 

 

BLOCK LENGTH

Specifies the maximum block size.

Y

N

N

 

 

 

 

 

BLOCK LMULT

Specifies a multiplication factor to determine

Y

N

N

 

block length.

 

 

 

 

 

 

 

 

BLOCK LTHFLD

Specifies the length of field that contains the

Y

N

N

 

block length specification.

 

 

 

 

 

 

 

 

BLOCK OFFSET

Specifies the location of the block length field.

Y

N

N

 

 

 

 

 

BLOCK POSTAMBLE

Specifies the length of extraneous data at the

Y

N

N

 

end of the block.

 

 

 

 

 

 

 

 

BLOCK PREAMBLE

Specifies the length of the operating system

Y

N

N

 

portion of block

 

 

 

 

 

 

 

 

BLOCK ZERO

Specifies that the criterion test for the end of the

Y

N

N

 

block is 0.

 

 

 

 

 

 

 

 

The following sections describe the syntax of the BLOCK command parameters and explain their options.

2-12

Using LCDS Print Description Language

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Xerox 701P21091 manual Summary of Block command parameters, Parameter Specifies Offline Online