| filename extensions | art-335 |
| control | |
| TechTarget file types | art-336 | CONTROL-HEC-HMS-Control-specifications-data-Header |
| TechTarget file types | art-336 | CONTROL-Unknown-Apple-II-File |
| English | eng-000 | HEC-HMS Control specifications data Header |
| English | eng-000 | Unknown Apple II File |