> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/intro.md).

# Formulas and expressions

The Formula Editor is a powerful tool for executing constraints and calculations. The built-in functions and the various operators offer a wide range of options for data output and modification.

![](/files/e5SwtX5UTBU7Kqe2WXbG)

## Formula

Within the Formula Editor, you use [functions](/acron-9.3/en/intro/funktionen.md), [operators](/acron-9.3/en/intro/operator.md), [constants](/acron-9.3/en/intro/konstanten.md) and [variables](/acron-9.3/en/intro/variablen.md) to specify calculations and evaluations / constraints.

It is possible to combine multiple logic links - including differing ones - within a constraint.

Note, though, that the individual elements you can use in an expression have a hierarchical order of processing. The general hierarchy is:

| Priority | Element                                                                                 |
| -------- | --------------------------------------------------------------------------------------- |
| 1        | Brackets                                                                                |
| 2        | [Functions](/acron-9.3/en/intro/funktionen.md)                                          |
| 3        | [Logical Operators](/acron-9.3/en/intro/operator/operator_logisch.md)                   |
| 4        | [Arithmetic Operators](/acron-9.3/en/intro/operator/operator_arithmetisch.md)           |
| 5        | [Comparative operators (relations)](/acron-9.3/en/intro/operator/operator_vergleich.md) |

If you want to bypass this processing hierarchy, you must use brackets. Brackets within an expression are always resolved from the inner to the outer.

## Formula test

Facility to test the formula:

In the left column of the table the related variable is displayed. In the right column a value can be entered. After leaving the input field, the calculation will be performed and displayed.

* Result - decimal

  The result of the calculation is displayed in decimal form.
* Result - hexadecimal

  The result of the calculation is displayed in hexadecimal form.

  Note

  Not for floating point numbers.
* Result - binary

  The result of the calculation is displayed in binary.

  Note

  Not for floating point numbers.


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