I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 94)

Readiris TM 14 – User Guide
101

XPS Image-Text. This file type is most commonly
used. It contains two layers: the recognized text, and
the original image on top of the text. This way, you
have both access to the recognized text and you still see
the original image.
Note: since the image covers the text, any recognition
mistakes will not be visible.

XPS Text-Image. This file type is the opposite of XPS
Image-Text. It contains the original image in the
background, and the recognized text on top of the
image.
Note: any recognition mistakes will be visible in this
format.

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.
Note: Readiris can also generate hyper-compressed XPS
documents. See the section Selecting the XPS Options for
more information.

RTF
RTF stands for "Rich Text Formatting". It is a free document file
format developed by Microsoft Inc. to facilitate document
exchange. Most text processors are able to read and write RTF
documents. Examples are Microsoft Word 97, 2000, 2002, 2003.