I.R.I.S. IRISPen Express 6 for Windows - Manual (Page 35)

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C
HAPTER
4
B
ASIC SETTINGS
R
EADING OPTIONS
Scan type
The Scan type determines the nature of the data to be scanned and
read with your pen. Select the appropriate Scan type in the drop-
down list.
Text (default value):
To read machine-printed text in a certain language. This includes
alphanumeric characters, punctuation marks, numeric data, etc.
The set of characters used by the software to read such data directly
depends on the language chosen for the reading.
Numeric:
To read machine-printed figures, numeric tables, etc. This includes
special characters, mathematical symbols, punctuation marks,
currencies, etc.
The set of characters used by the software to read such data is the
same for all languages. You can freely customize this character set
(see: Frequent command: Character Subset).