This example loads the sale module, which is used for managing e-commerce functionality in Bitrix CMS. By specifying the name of the module in the function, the package library will be searched for the module and if found, loaded into the PHP code environment. This function is useful for loading only the required modules and not loading unwanted packages, which would otherwise consume resources and time. In summary, CModule IncludeModule is a PHP function that is used to include a specific module from the package library. The function helps developers to better manage resources and keep their code organized. It is commonly used in Bitrix CMS to load modules that provide functionality for specific tasks.