Abstract: Systems, methods and computer readable media for graphically identifying properties of files represented on a user interface, such as a computer display. File properties such as file permissions, file ages and relative file sizes may be graphically represented using color encoding of icons in part or in total, color encoding of text associated with icons representative of files, unique icon shapes and relatively sized icons, as well as combinations of these features.

Abstract: Systems, methods and computer readable media for graphically identifying properties of files represented on a user interface, such as a computer display. File properties such as file permissions, file ages and relative file sizes may be graphically represented using color encoding of icons in part or in total, color encoding of text associated with icons representative of files, unique icon shapes and relatively sized icons, as well as combinations of these features.

Abstract: A method and apparatus for providing an interactive mathematical manipulation methodology on a computer system. Equation manipulation and derivation as performed by a person using pencil and paper are simulated. The user enters an equation and performs mathematical manipulations by moving expression elements on the display. Features are included for maintaining the truth of expressions input by a user, simultaneously editing a multiplicity of equations, outlining expression elements, isolating a particular element in an equation, substituting one equation into another, and providing simplified parentheses rules.