I.R.I.S. Readiris Corporate 12 for Windows User Guide - Manual (Page 62)

Chapter 9 – User indexing
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 Click Browse to select the required output folder.
 Click in the index field you want to use (subfolder, file name,
subject and keywords)
 Then draw a frame around the text you want to use as index
item.
The text will be OCRed on the fly and inserted in the index field.
 Click OK to exit the user index settings and click Recognize +
Save to recognize your documents.
The documents will be saved in the (sub)folder and under the file
name you specified. Depending on the output format you selected, the
subject and keywords will be added to the document properties of the
output documents.
Note: the user index settings are also accessible via the Output File
dialog box, which opens when you click Recognize + Save.