Begin Resource (BR) structured field

ACIF uses this structured field to delimit the resources in the file.

ACIF also identifies the type of resource (for example, overlay) that follows this structured field. The type is represented as a one-byte hexadecimal value where:
X'03'
Specifies a GOCA.
X'05'
Specifies a BCOCA.
X'06'
Specifies a IOCA.
X'40'
Specifies a font character set.
X'41'
Specifies a code page.
X'92'
Specifies an object container.
X'FB'
Specifies a page segment.
X'FC'
Specifies an overlay.
X'FE'
Specifies a form definition.