> For the complete documentation index, see [llms.txt](https://1ex.gitbook.io/1ex-smart-dom/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://1ex.gitbook.io/1ex-smart-dom/features/dom-modules.md).

# DOM Modules

### Description

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Order Book modules allow you to more deeply evaluate the behavioral nature of order movement and the dynamics of price movement. Each module reflects a certain slice (angle) of data perception.

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### Purpose

* The order book modules allow you to assess the movement of orders in the order book. 
* Provide analysis and prediction of price behavior. 
* Show strategic price levels.

The modules are located next to the order book and display information at each price level.