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# 6.29. line Macro

## Interface

The general syntax is:

      !line lineno [; filename] [; context]

The arguments are:

Name | Type | Default | Rule
lineno | integer |  |
filename | string | _NULL_ |
context | string | line |

See Understanding Macro Interfaces, if necessary.

## Description

The line macro can be used to change the line number output within error and warning messages.

## Examples