Some applications support both alphanumeric keypads
and numeric keypads. The selected window determines
which keypad is appropriate for the operator to input the
required information.
Use both uppercase and lowercase letters when creating
entries to improve readability on the display.
Applications customize the numeric keypads as well.
The decimal point (or comma) and minus sign are present
on some numeric keypads and absent on others, depend-
ing on whether decimal increments or negative numbers
are appropriate for a given window – for example, GPS
receiver offset values.
2 - ICONS AND WINDOWS
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