| filename extensions | art-335 |
| 4th | |
| TechTarget file types | art-336 | 4TH-FORTH-Source-Code-Program |
| TechTarget file types | art-336 | 4TH-Forth-language-source-file |
| TechTarget file types | art-336 | 4TH-Forth-source-code |
| English | eng-000 | FORTH Source Code Program |
| English | eng-000 | Forth language source file |
| English | eng-000 | Forth source code |