Here are the data structures with brief descriptions:
  LV2_Atom | The header of an atom:Atom |
| LV2_Atom_Double | An atom:Double |
| LV2_Atom_Event | The header of an atom:Event |
| LV2_Atom_Float | An atom:Float |
| LV2_Atom_Forge | A "forge" for creating atoms by appending to a buffer |
| LV2_Atom_Forge_Frame | A stack frame used for keeping track of nested Atom containers |
| LV2_Atom_Int | An atom:Int or atom:Bool |
| LV2_Atom_Literal | An atom:Literal |
| LV2_Atom_Literal_Body | The body of an atom:Literal |
| LV2_Atom_Long | An atom:Long |
| LV2_Atom_Object | An atom:Object |
| LV2_Atom_Object_Body | The body of an atom:Object |
| LV2_Atom_Object_Query | A single entry in an Object query |
| LV2_Atom_Property | An atom:Property |
| LV2_Atom_Property_Body | The body of an atom:Property (e.g |
| LV2_Atom_Sequence | An atom:Sequence |
| LV2_Atom_Sequence_Body | The body of an atom:Sequence (a sequence of events) |
| LV2_Atom_String | An atom:String |
| LV2_Atom_Tuple | An atom:Tuple |
| LV2_Atom_URID | An atom:URID |
| LV2_Atom_Vector | An atom:Vector |
| LV2_Atom_Vector_Body | The body of an atom:Vector |
| LV2_Descriptor | Plugin Descriptor |
| LV2_Event | An LV2 event (header only) |
| LV2_Event_Buffer | A buffer of LV2 events (header only) |
| LV2_Event_Feature | Non-POD events feature |
| LV2_Event_Iterator | An iterator over an LV2_Event_Buffer |
| LV2_Extension_Data_Feature | The data field of the LV2_Feature for this extension |
| LV2_Feature | Feature |
| LV2_Lib_Descriptor | Descriptor for a plugin library |
| LV2_Log_Log | Log feature (LV2_LOG__log) |
| LV2_Options_Interface | Interface for dynamically setting options (LV2_OPTIONS__interface) |
| LV2_Options_Option | An option |
| LV2_Resize_Port_Resize | |
| LV2_State_Interface | LV2 Plugin State Interface |
| LV2_State_Make_Path | Feature data for state:makePath (LV2_STATE__makePath) |
| LV2_State_Map_Path | Feature data for state:mapPath (LV2_STATE__mapPath) |
| LV2_URI_Map_Feature | URI Map Feature |
| LV2_URID_Map | URID Map Feature (LV2_URID__map) |
| LV2_URID_Unmap | URI Unmap Feature (LV2_URID__unmap) |
| LV2_Worker_Interface | LV2 Plugin Worker Interface |
| LV2_Worker_Schedule | |
| LV2UI_Descriptor | The implementation of a UI |
| LV2UI_Idle_Interface | UI Idle Feature (LV2_UI__idle) |
| LV2UI_Peak_Data | Peak data for a slice of time, the update format for ui:peakProtocol |
| LV2UI_Port_Map | Port Map Feature (LV2_UI__portMap) |
| LV2UI_Port_Subscribe | Port subscription feature (LV2_UI__portSubscribe); |
| LV2UI_Resize | UI Resize Feature (LV2_UI__resize) |
 LV2UI_Touch | A feature to notify the host the user has grabbed a UI control |
