# jCL B
Updated: 10/19/2020, 10:24:56 AM
Created: 10/19/2020, 10:24:56 AM
Last Updated By: Daniel Klein
Read Time: 1 minute(s)
Tags: jcl
# Description
The command moves the active input buffer pointer back to the previous parameter. It takes the general form:
B
1
# Note
The input buffer pointer is moved backwards to the preceding field mark or to the beginning of the input buffer. If the pointer is on the first character of a parameter (or a field marker), the pointer will be moved back to the field mark of the previous parameter.
# Example 1
| Command | PIB Before | PIB After |
| ------- | ---------- | --------- |
| B | ABC^DEF^GHIJK | ABC^DEF^GHIJK |
| | ^ | ^ |
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# Example 2
| Command | PIB Before | PIB After |
| ------- | ---------- | --------- |
| B | ABC^DEF^GHIJK | ABC^DEF^GHIJK |
| | ^ | ^ |
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ack to jCL Commands