I.R.I.S. Readiris Corporate 12 for Windows User Guide - Manual (Page 87)

Readiris TM Corporate 12 – User Guide
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Create bookmarks
The option Create bookmarks creates bookmarks for each text
block, graphic and table in Adobe Acrobat PDF files.
Embed fonts
Select the option Embed fonts to embed fonts in Adobe Acrobat
PDF files.
Embedding fonts prevents font substitution and ensures that readers,
regardless of their computer configuration, see the text in its
original fonts.
Embedding fonts increases the file size of recognized documents
somewhat.
PDF/A documents
Next to "regular" PDF documents, Readiris offers PDF/A output.
Simply select the option Create PDF/A compliant files.
PDF/A files are used for long-term archiving and contain only what
is strictly needed for opening and viewing them.
I HQC COMPRESSING PDF DOCUMENTS
Besides four types of "regular" PDF output, Readiris offers iHQC
compressed PDF output: PDF documents of the types Image-Text
and Image can be hyper-compressed by means of iHQC without
loss of image quality.
iHQC stands for intelligent High-Quality Compression, I.R.I.S.'
proprietary, efficient compression technology. iHQC is to images
what MP3 is to music and what DivX is to movies.