| filename extensions | art-335 |
| bsy | |
| TechTarget file types | art-336 | BSY-Busy-flag-FTN-soft |
| TechTarget file types | art-336 | BSY-FTN-Soft-Busy-Flag |
| TechTarget file types | art-336 | BSY-VTrain-Vocabulary-Trainer-Learning-Cardfile-Paul-Raedle |
| English | eng-000 | Busy flag - FTN soft |
| English | eng-000 | FTN Soft Busy Flag |
| English | eng-000 | VTrain Learning Cardfile |