This data type defines a descriptor for form data stored in a BREW resource file,
identifying where the information can be found by file name and resource ID. This
information can then easily be stored as a form property to identify the value of
text, bitmaps and other pieces of data displayed by a form. For example, the image
to be displayed in the background of a form could be stored in a resource file, with
the file name and the ID of the appropriate bitmap resource stored together in a
data structure. A pointer to this structure, in turn, would be stored in
the FID_BACKGROUND property of the form.