I.R.I.S. Readiris Corporate 12 for Mac User Guide - Manual (Page 75)

Readiris TM Corporate 12 – User Guide
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S ELECTING THE PDF OPTIONS
To select the PDF options:
 Click the output format icon on the main toolbar and select PDF.
 Depending on the PDF type you select, several options are
available. Click the PDF options tab to access them:
Version
Select which version of the PDF format you want to generate.
Note:
It takes Adobe Acrobat 5.0 and higher to open PDF 1.4
documents.
It takes Adobe Acrobat 6.0 and higher to open PDF 1.5
documents.