* @defgroup Eina_Data_Types_Group Data Types
* @ingroup Eina
*
- * Eina provide easy to use and optimized data types and structures.
+ * Eina provides an easy to use and optimized data types and structures.
*
+ * @defgroup Eina_Content_Access_Group Content Access
+ * @ingroup Eina_Data_Types_Group
+ *
+ * Eina provides an uniform way to access elements of a container,
+ * either sequential or indexed.
*
* @defgroup Eina_Containers_Group Containers
+ * @ingroup Eina_Data_Types_Group
+ *
+ * Data types that contains other types. Examples: list, array and hash.
*
* @section eina_main_Intro Introduction
* Containers are data types that hold data and allow iteration over