> ## 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. # Header and Footer > Header and Footer elements mark the beginning and end of a document; add, convert, and test these Group-type elements in ABBYY FlexiLayout Studio. The program uses **Header** and **Footer** elements to detect the beginning and the end of a document. These are [Group](/flexi-capture/fls/template/elements-compound)[elements](/flexi-capture/fls/template/elements-compound) and have all the properties of **Group** elements, but may occur in a FlexiLayout only once. In the tree of elements, the **Header** element is marked with

and the **Footer** element is marked with

. The **Header** and **Footer** elements are located at the top of the tree. To add a **Header** or **Footer** element, right-click in the FlexiLayout and select Header **/** Footer. A **Group** element may be converted into a **Header** or **Footer** element by selecting the **Convert to Header** or **Convert to Footer** command on its shortcut menu. You can also convert a **Header** or **Footer** element into a common **Group** element by selecting **Convert to Group** on its shortcut menu. To test the **Header** and **Footer** elements on a particular page, use the **Test Header** and **Test Footer** commands. ## Related topics Build FlexiLayouts for multi-page documents, setting page limits and document-wide search. Detect the first and last pages of multi-page documents to speed matching.