I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 126)

Readiris TM 14 – User Guide
133

XPS Text. This file type contains the recognized text, but does
not contain the original image of your document. Any images in
the original document are included as graphics in the XPS file.

XPS Image. When you select this file type, Readiris doesn't
execute the text recognition on your document. Your XPS file
will not be text-searchable, it only contains the image of your
original document.
The XPS Options
Create bookmarks
Bookmarks are types of links inside an XPS document, which
contain representative information about the section they are linked
to. Bookmarks give structure to your XPS documents.
In Readiris, the option Create bookmarks creates a bookmark for
each text zone, image zone and table zone inside a XPS file.