# Formulas

Fusion supports standard spreadsheet formulas (cell references, addition, etc.) as well as functions. Fusion’s function library is a combination of Contour expression language DSL and Fusion specific spreadsheet functions. For a list of functions, visit the [function library](../function-library/index.md).

Type `=` into any cell to use a formula. Typing `=a` into the formula bar will give you a list of suggestions.

Browse the other pages in this section to learn more about formulas:

* [Validate results](../validate-results/index.md)
* [Boolean logic](../boolean-logic/index.md)
* [Perform Actions](../perform-actions/index.md)
* [Visualize time series](../visualize-time-series/index.md)
* [Function Library](../function-library/index.md)