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RPN mode

In this mode before you call the function you should put arguments on the stack. When then function is called stack sends arguments to the function and putting back function's result to the stack.
Beside mathematical functions stack has own special functions. To use these functions press direction keys [UP] or [DOWN]:
Function keys descriptions will changed when you go to the stack. You can use function keys to:
[F1] (->Top) - put selected value to top of the stack;
[F2] (Swap) - swap selected value and value below;
[F3] (Echo) - send selected value to input line and leave the stack;
[F4] (Drop) - drop selected value from stack;
[F5] (Copy) - copy selected value to Windows clipboard;
[F6] (Cancl) - cancel stack operations and return to input line.
See also:
Other working modes
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