| filename extensions | art-335 |
| hhk | |
| TechTarget file types | art-336 | HHK-HTML-Help-Index-Microsoft-Corporation |
| TechTarget file types | art-336 | HHK-HTML-Help-Workshop-Index-file |
| TechTarget file types | art-336 | HHK-MS-HTML-Help-Index |
| English | eng-000 | HTML Help Index |
| English | eng-000 | HTML Help Workshop Index file |
| English | eng-000 | MS HTML Help Index |