> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FlexiLayout language

> Write FlexiLayout language code on the Advanced tab of the Properties dialog box to set element properties, relations, and hypothesis constraints.

The **Advanced** tab in the **Properties** dialog box has two fields where you can enter code written in the FlexiLayout language. This language allows you to specify element properties, relations between elements, and set additional constraints for formulated hypotheses.