| filename extensions | art-335 |
| hds | |
| TechTarget file types | art-336 | HDS-Hierarchical-Data-System |
| TechTarget file types | art-336 | HDS-Parallels-file |
| TechTarget file types | art-336 | HDS-XMap-Hierarchical-Dataset-Delorme |
| English | eng-000 | Hierarchical Data System |
| English | eng-000 | Microsoft PlayReady Data File |
| English | eng-000 | Parallels file |
| English | eng-000 | XMap Hierarchical Dataset |