I.R.I.S. Readiris 14 for Mac User Guide - Manual (Page 65)

Section 5: Selecting the Recognition Options
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You can also access the User Lexicon Editor in the Readiris
installation folder.
 On the File menu click New to open a new lexicon.
 Insert the words you want Readiris to recognize and click the
Add button.
You can also copy-paste text segments from other files and import
and edit existing text files.
Tip: importing company documents or word lists may be the fastest
way to create a user lexicon containing company-specific
terminology.
The terms you enter are sorted alphabetically.
Duplicate words are removed automatically.
 Click Save to save the lexicon file in the folder of your choice.
 Return to the Readiris Settings menu and point to User Lexicon.
 Click Open and select the user lexicon file of your choice in the
dialog box.
Note that in order for Readiris to recognize the words in the user
lexicon, the correct language must have been selected. Also note that
words containing characters that do not exist in the selected language
will not be recognized correctly.
 Click Save to start the recognition.