# u21bc user exit

User exit u21bc deletes entries from
the output buffer. The next line in the Proc specifies the delete
code.

## Syntax

```
u21bc
delete.code
```

## Parameter(s)

| delete.code | 0 | Deletes all entries. |
| --- | --- | --- |
| 1 | Deletes the last entry only. | |

## See also

- [PROC processor user exits](https://d3codex.com/proc/proc-processor-user-exits/)

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Source: https://d3codex.com/proc/u21bc-user-exit/ - part of the D3Codex reference.