Mathematica integrates free-form input of arbitrary 2D and 3D graphics, as well as user interface and active dynamic elements, into its unique unified architecture.

• Support for arbitrary graphical notation as input.
• Immediate support for sliders, checkboxes, color swatches, etc. as input elements.
• Arbitrary input interpretations can be attached to any user interface or other object.
• Support for arbitrarily nested input and interface forms, integrated with scrolling documents.

Use Graphical Controls Directly in Input	Input Graphics Just like Other Expressions	Operate Directly on Graphics
Define Functions That Take Graphics as Arguments	Do Computations with Freehand Input	Use Forms Directly as Evaluatable Input
Create Visual Language Syntaxes