| filename extensions | art-335 |
| help | |
| TechTarget file types | art-336 | HELP-Apple-Guide |
| TechTarget file types | art-336 | HELP-Microsoft-Help-File |
| TechTarget file types | art-336 | HELP-Unix-help-file |
| English | eng-000 | Apple Guide |
| English | eng-000 | Mac OS X Help Book |
| English | eng-000 | Microsoft Help File |
| English | eng-000 | Unix help file |