| filename extensions | art-335 |
| lef | |
| TechTarget file types | art-336 | LEF-LEN-Exchange-Format-Header |
| TechTarget file types | art-336 | LEF-Lenex-XML-data-file |
| English | eng-000 | LEN Exchange Format File |
| English | eng-000 | LEN Exchange Format Header |
| English | eng-000 | Lenex XML data file |