A BOX record can appear after a LAYER record has been issued. The BOX record defines one or more rectangular data objects.
The header flags byte is not used.
The BOX record contains the following fields:
| bytes | field name | purpose |
|---|---|---|
| 4 | left | left value |
| 4 | bottom | bottom value |
| 4 | right | right value |
| 4 | top | top value |
| ? | [repeat] | repeat for multiple boxes |
The first four integers define a box, and a record can contain multiple box definitions (four integers per box). Each box is given the properties currently in effect, and is assigned to the layer currently in effect.