| Horde_ListHeaders | Class to parse List Header fields (RFC 2369/2919). |
| Horde_ListHeaders_Base | Object representation of a basic list header (RFC 2369) element. |
| Horde_ListHeaders_Id | Object representation of a List-ID (RFC 2919) element. |
| Horde_ListHeaders_NoPost | Object representation of a basic list header (RFC 2369) element. |
| Horde_ListHeaders_Object | Object representation of a list header element. |
| Horde_ListHeaders_Translation | Horde_ListHeaders_Translation is the translation wrapper class for Horde_ListHeaders. |