I.R.I.S. Readiris 14 for Mac User Guide - Manual (Page 61)

Section 5: Selecting the Recognition Options
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The characters the recognition system isn't sure of are displayed.
If the results are correct:
 Click the Learn button to save the result as sure.
The learning results are temporarily stored in the computer memory, for the
duration of the recognition. Readiris will no longer display the learned
characters when recognizing the remainder of the document.
When a new document is recognized, the learning results are erased.
To save learning results permanently, use a font dictionary. For more
information, see the section Using Font Dictionaries.
o
Click Finish to accept all solutions the software offers.
If the results are incorrect:
o
Type in the correct characters and click the Learn button.
Note: if you are dealing with documents that contain special
characters that are not available on your keyboard, click the
browse button to open the Character Palette. Double-click the
characters you want to insert.