I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 49)

Section 5: Selecting the Recognition Options
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selecting the correct recognition language. The recognition
language is set to the language you selected during installation.
To select a different language:

Click the down arrow right of the Main list and select the
language of your choice.
Other Recognition Options (Readiris Pro + Corporate)
Recognizing numeric documents
When you are processing documents that only contain numbers and
almost or no text, then it is recommended to select the Numeric
option.
When this option is selected Readiris only recognizes the numerals
0-9 and the following series of symbols:
+
Plus sign *
Asterisk /
Slash %
Percentage ,
Comma
.
Period (
Opening
parenthesis )
Closing
parenthisis -
Hyphen =
Equation sign
$
Dollar sign £
Pound sign
€
Euro sign
¥
Yen sign