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# 5.7. box Filter

## Interface

The general syntax is:

      !block box[; parameters]
      ...
      !endblock

The parameters are:

Name | Type | Rule
align | string |
listitem | integer |
narrow | boolean |
wide | boolean |
lines | boolean |
bgcolor | string |
fill | integer |

See Understanding Filter Interfaces, if necessary.

## Description

The box filter is used to box a region of text. The lines parameter can be used to treat each line as a line within a paragraph - without this, the contents is treated as normal SDF.

The other parameters have the same meanings as they do for the table filter.

## Limitations & Future Directions

Some of the output drivers (e.g. the MIF driver) do not support nested tables, so tables within the box may be ignored.