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Boolean is a logical calculus of truth values or set membership that represents relationships symbolically (as those implied by the logical operators AND, OR, and NOT) between entities (as sets, propositions, or on-off computer circuit elements).

Boolean - Logical Operator - OR

This is a simple illustrative example of Groovy code using an Equation-in-equation (EiE), in this case using the "!=" Boolean equation.

Kanish Calculator contains Two buttons that will help you do the following

Dataset methods:

**vCalc's** Equation Editor and Constant Editor allow you to select from the library of **vCalc** equations, constants and data sets and to *drag-and-drop* these **tokens**^{1} into your equation's code or your constant's code. You can thus use anything that exists in **vCalc** to create something new and/or more powerful.

- ^ Tokens are the collective name for vCalc's equations, constants, data sets and calculators. Tokens are the things you can create and which vCalc provides an editor with which you can build, duplicate or modify a token. A token is defines as something that is a symbol or representation of something.