Xerox FreeFlow manual Sample Bselect and Bdelete command Usage Example

Using logical processing

The contents of the first byte of each tape block (offset=0, length=1) is examined for the character constant 'P'. When a 'P' is detected, the entire block is selected (BSELECT) for printing. When the first byte of any block does not contain a 'P', that block is bypassed and not printed. In this example, only block 1 is printed.

The following figure shows a sample of how BSELECT and BDELETE commands are used.

Figure 3-2. Sample BSELECT and BDELETE command

usage

Example 2

The following example shows a BDELETE command that will delete from the tape any blocks that contain $$11:

T1: TABLE CONSTANT=('$$11');

C1: CRITERIA CONSTANT=(4,4,EQ,T1);

BDELETE TEST=C1;

3-30 Using LCDS Print Description Language