The Handbook
is an application that can replace your graphing calculator. It has numerical, logical, symbolic, and analysis features that let you calculate mathematical expressions on the console and graphically plot the results in 2D or 3D. is rooted in the Mathematical Markup Language (MathML); however, one does not need to know MathML to use .

Introduction
has numerous features that allow the user to perform all sorts of mathematical operations and show graphically. At one time, this program was MathML oriented. Now it can be used by anyone with a little mathematical knowledge to solve simple and advanced problems alike.
It includes such features as:
A user console for quick and easy evaluation of math functions.
Scripting capability for advanced series of calculations
Language capabilities including function definition and syntax autocompletion.
Calculus functions including symbolic differentiation, vector calculus, and list manipulation.
Function plotting with live cursor for graphical root finding and other types of analysis.
3D plotting for useful visualization of 3D functions.
A built-in operator dictionary for quick reference to the many available functions.
Below is a screenshot of the application in action:
Here's a screenshot of main window
main window
When the user begins a session, they are presented with a single window consisting of a Console tab, a 2D Graph tab, a 3D Graph tab and a Dictionary tab. Within each tab, you will find an input field to enter your functions or calculations, and a display field which shows the results.
At any time the user may manage their session with the main menu Session options:
N Session New 	Opens a new window.
F Session Full Screen Mode 	Toogle full screen mode for window. The full screen mode can also be switched on and off using button at the top right part of window.
Q Session Quit 	Shuts the program down.