Usage

General Usage
General usage is straight forward and similar to the way most simple scientific calculators operate, but take note of the following special features:
Result Stack 	Each time you click on the = button or press your keyboard's or = keys, the display result is written to 's result stack. You can navigate through the result stack with your keyboard's Z and Z keys.
Percent Function 	 The percent function works somewhat differently to that on most calculators. However, once understood, its enhanced functionality proves quite useful. See the section about the percent function for further details.
Cut and Paste 	
Pressing C will place the displayed number on to the clipboard.
Pressing V will paste the clipboard content into the display if the content of the clipboard is a valid floating point number.
It is still possible to copy/paste by clicking on 's display, but this may disappear in future versions.
Advanced functions 	 When you start for the first time, the calculator will only display buttons for basic arithmetic computations.
Under the menu entry Settings it is possible to select a mode for : it is possible to choose Simple or Science or Statistic or Numeral System mode. Please note, that these modes will slightly change as evolves.
Button Layout 	 To give easy access to all the functions in advanced modes in , many keys have a second layout. Click on or press the shortcut 2 to make the second layout of the buttons visible.
History 	 The history area shows all the calculations done in for the active session of . Click on AC or press the shortcut Del to clear the content of the history. To activate or deactivate it, use the item Show History in the menu Settings of the menu bar, or press H.

Simple Mode
This mode contains only those buttons and functions, which are essential necessary for basic calculations.
If you just want to sum up all items on an invoice this mode may be your choice.

Science Mode
In this mode the left column of buttons is allocated to trigonometric functions:
Buttons	Function
Hyp	Enter Hyperbolic sub mode. Hyp Sin for example is the hyperbolic sine: sinh
Sin	Compute the sine
Sin or Asin	Compute the inverse sine
Cos	Compute the cosine
Cos or Acos	Compute the inverse cosine
Tan	Compute the tangent
Tan or Atan	Compute the inverse tangent
Log	Compute the Log base 10
Log or 10x	Compute 10 to the power of x
Ln	Compute the natural logarithm. That is the log to base e
Ln or ex	Compute e (the base of the natural logarithm) to the power of x
The second column has buttons for algebraic functions:
Buttons	Function
Mod	Compute the remainder in Euclidean division
Mod or IntDiv	Integer division (integer part of the quotient)
1/x	Compute the reciprocal for a number
1/x or nCm	Compute the number of distinct second-operand-element subsets of it that can be formed for any set containing first operand elements (binomial coefficient)
x!	Compute the product of all positive integers less than or equal to the current integer operand (factorial)
x²	Compute the square of x
x² or √x	Compute the square root of x
xʸ	x power y
xy or x1/y	x power 1/y
x³	Computes the third (cubic) power of x
x³ or ∛x	Computes the third (cubic) root of x
x·10ʸ	Computes the product of the first operand and decimal exponent of the second operand

Statistical Mode
In this mode the left column of buttons is allocated to statistical functions:
Most of the functionality in this mode is centered around the Dat button. To create a data list of numbers, enter a number into the calculator and press Dat. A sequentially increasing number is shown on the display indicating which position in the Data list the number occupies. A traditional calculator only stores three values for statistical functions: The number of discrete items in a list, the sum of the data items entered and the sum of the square of all data items in the list. differs by actually storing each discrete value, allowing you to calculate the median value of the data.
Buttons	Function
N	Recall the number of data items entered
N or Σx	Display the sum of all data items entered
Mea	Display the mean of the data items entered
Mea or Σx²	Display the sum of the square of all data items entered
σN	Display the standard deviation (n)
σN or σN-1	Display the population standard deviation (n-1)
Med	Display the median
Dat	Enter a data item
Dat or CDat	Clear last data item entered
CSt	Clear the store of all data item entered
The next two columns hold the buttons with trigonometric and algebraic functions described in the Science mode section.

Numeral System Mode
This mode contains buttons and functions to calculate in binary, hexadecimal, octal and decimal.
You select the numeral system with the radio buttons on the right. To insert a hexadecimal number for example, just do the following: Select Hex from the radio buttons. Then enter a number and note, that you can use the letters A to F for numbers larger than 9. If you would like to see this number in binary, just select Bin from the radio buttons.
Binary, octal and hexadecimal numbers can be displayed as groups of digits separated by whitespaces. Such grouping can improve readability of numbers. For example, hexadecimal number AF1C42 can be displayed as AF 1C 42 with separation every second digit. Grouping can be turned off or tweaked. Select Settings Configure ... to bring up the configuration dialog and change the setting on General page as appropriate.
You may want to select Show Bit Edit from the Settings menu to see selected bits.
There are logic operators available in this mode. These operators are:
Buttons	Function
AND	Two numbers are logically anded
OR	Two numbers are logically ored
XOR	Two numbers are logically exclusive ored
Lsh	Left shift the value
Rsh	Right shift the value
Cmp	Perform a 1's complement
The second column holds the buttons with algebraic functions described in the Science mode section.
The third column with the buttons A to F is enabled only in Hex mode.

Memory Operations
supports the memory operations given by standard calculators plus six slots to hold constants.

Standard Memory Operations
can remember results of operations for you, and re-use them in later calculations. You can access these functions via several buttons labeled MR, MS, M+ and MC.
MS 	The MS button stores the currently displayed result in memory.
M+ 	The M+ button adds the current result to the one in memory. So, if you had stored a 20, and the current result is a 5, your memory would contain 25 when you press it. If the memory is empty, it acts like MS and simply stores the result.
MR 	The MR button gets the value stored in memory and puts it in the display.
MC 	The MC button clears the memory.
If a value is stored in memory a M will appear in the status bar, next to the calculator mode indicator

Constants
The six constants buttons C1 to C6 will only be visible after activating the item Constants Buttons in the menu Settings of the menu bar. They are available in Science mode and Statistics mode
To see the value stored in each constant hover the button with the mouse pointer.
To store the number shown in the display in one of the six constants, first press followed by the desired button key C1 up to C6.
To use the value stored in any of the constants in a calculation, just press the desired button (C1 to C6), and the corresponding number will appear in the display.
It is possible to change the label of the constants button to make it easier to remember which button holds which constant. Click with the right mouse button on one of the buttons C1 to C6. A popup menu appears, in which you select Set Name.
There are many (mostly physical) predefined constants, which can be put on any of the six buttons C1 - C6 by selecting the desired constant in the popup menu that appears after right clicking on one of the constant buttons and selecting Choose from List. Though the predefined constants can also be accessed via the Constants in the menu bar, storing it on a constants button is very handy, if the number is used frequently.

Single Key Accelerators
To simplify entering calculations from the keyboard has single key accelerators for most functions. For example entering 7R or 7r will calculate the reciprocal of 7 (1/7).
During a computation, you can always press to make each button display its key-binding.
Key	Function	Notes
H	Hyp	Hyperbolic as in Hyp Sin, the sinh
S	Sin
C	Cos
T	Tan
N	Ln	log base e
L	Log	log base 10
Ctrl-2		Second function for this button. ⪚ if you want arcsin type Ctrl-2 s
\	+/-	Change sign
[	x^2
^	x^y
!	x!	Factorial
E	x10y	Exponent
<	Lsh	Left shift
>	Rsh	Right shift.
&	AND	Logical AND
x or *	X	Multiply
/	/	Divide
D	Dat	Enter data item in statistical mode
|	OR	Logical OR. Note: OR is XOR
R	1/x	Reciprocal
	=
Return	=
	<=	Delete last number
PgUp	C	Clear
	C	Clear
PgDown	AC	Clear all
Del	AC	Clear all
:	Mod	remainder of dividing
+1 to +6	C1	use the value stored in C1 to C6