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The slider under the results window will change the number
of decimals. This will happen next time the formula is
evaluated (just press '='). The result window will
grow or shrink as necessary.
The range of the slider,
and the actual precision of the result are determined
by settings in Preferences. Most constants in Wcalc have
a precision of about 810 digits, pi is an exception,
as it is calculated as necessary. 



The button right of the result changes the number base of
the result, cycling through Decimal, Hexadecimal, Octal
and Binary. Again, it's necessary to press '=' to update.
To avoid confusion, I clear the result window when
changing the base. 



Note that you can always enter numbers in any base.
Numbers starting with a digit 1  9 will be interpreted
as decimal, starting with 0 as octal, and starting with
0x as hex.
Also note that hex/octal/binary numbers with fractional
parts are allowed! 
2899
(c) John Coppens ON6JC/LW3HAZ 