> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso5/developing/form/expressions.md).

# Expressions

Throughout Kalipso, you’ll see that there are many inputs asking you to enter an Expression that will be calculated in runtime. Usually, most of the [Actions ](/kalipso5/developing/form/option-window/actions.md)parameters are Expressions, but also the "Filters", "Order By" and "Source Expressions" (Input Box for instance).

In this group you will find pages dedicated to different types of expressions. At the same time, you can access the Functions. Look on the left side of the menu or follow the links in the following list:

* [String Expressions](/kalipso5/developing/form/expressions/string-expressions.md)
* [Numeric Expressions](/kalipso5/developing/form/expressions/numeric-expressions.md)
* [Conditional Expressions](/kalipso5/developing/form/expressions/conditional-expressions.md)
* [Filter and Order By](/kalipso5/developing/form/expressions/filter-and-order-by.md)
* [Functions](/kalipso5/developing/form/expressions/functions.md)


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