By default, text and bitmap annotations are placed on layer 0. If a user wishes to specify a particular layer/datatype for the annotations this can be done by using the OUTPUT_LAYER setting in the annotation file.
OUTPUT_LAYER <layer>
**OPTIONAL**
- Map output to <layer>
- <layer> can be 'layer:datatype'
or simply just 'layer'
- Default layer: 0
- Default datatype: 0