I.R.I.S. IRISPen Executive 6 for Mac - Manual (Page 35)

C HAPTER 4 - B ASIC PARAMETERS
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Similarly, the subset used for reading English differs from the one
used for reading French (think of the "й", "и", "ы", etc. that do not
exist in English), etc.
By using a specific subset of characters, the software eliminates the
chances of recognition errors. For example, if you select the reading
mode Numeric, you limit the set of recognized characters to
numeric symbols only. By doing so, no confusion can possibly
made "5" and "S", ""9" and "g", "8" and "B", etc. as the software
automatically interprets the characters as figures.
You can also by yourself go one step forward and customize any of
the proposed subsets of characters by creating character subsets
that exclusively contain the symbols you want to recognize. As an
example, if you want to read amounts given in dollars exclusively,
select the reading mode Numeric, then limit the character set to
figures, punctuation and the only "$" sign, and eliminate all other
unnecessary symbols.
Handprinting: If you select the Handprinting reading mode, the
character subset proposed by default is limited to: numbers (0-9)
and capital letters (A-Z). This set of characters cannot possibly be
extended.
To customize a character subset:
• Click on
Define the output character subset in the IRISPen
Palette or select Output Subset from the Settings menu.
The subset of characters proposed by default for the selected data
type is enabled.