I.R.I.S. Readiris Corporate 12 for Windows User Guide - Manual (Page 79)

Readiris TM Corporate 12 – User Guide
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o The option Use columns instead of frames creates
columnized documents.
Columnized texts are easier to edit than documents containing
multiple frames: the text flows naturally from one column to the
next.
Note: when the system is unable to detect columns in the source
document, this formatting mode uses frames as a fallback position.
o The option Insert column breaks inserts a hard column
break at the end of each column.
Any text you edit, add or remove, remains inside its column; no text
ever flows automatically across a column break.
Tip: disable this option when you have columnized body text.
You'll ensure the natural flow of the text from one column to the
next.
o The option Add image as page background places the
scanned image as page background beneath the recognized
text.
This option increases the file size of the output files substantially,
however.
The format PDF Text-Image provides the same result for PDF
files.
The option Retain colors of background on the Options tab
provides a less drastic, more compact alternative.
General options
Click the Options tab to select the general options: