Here are the data structures with brief descriptions:

Ccp_cfg_element_t	A configuration element contains configuration information for an extension
Ccp_ext_point_t	Extension point structure captures information about an extension point
Ccp_extension_t	Extension structure captures information about an extension
Ccp_plugin_import_t	Information about plug-in import
Ccp_plugin_info_t	Plug-in information structure captures information about a plug-in
Ccp_plugin_loader_t	A plug-in loader instance
Ccp_plugin_runtime_t	Container for plug-in runtime information