The simple RDIB format consists of a Windows 3.0 or Presentation Manager 1.2 DIB enclosed in a RIFF chunk. Enclosing the DIB in a RIFF chunk permits the file to be consistently identified; for example, an INFO list can be included in the file.
The simple RDIB form is defined as follows, using the standard RIFF form definition notation:
<RDIB-form> RIFF ( 'RDIB_data( <DIB-data> ))
The <DIB-data> format is defined in Device-Independent Bitmap File Format.