| Acronym | Meaning |
| TUE | Trainer Unique Equipment |
| XTI | X/open Transport Interface |
| CLAW | Control Law Computations |
| FSI | Functionally Significant Item |
| UNCRYPT | Universal Cryptological Processor Training |
| AGSS | Auxiliary Research Submarine (misc) |
| ACAS | Application Control Architecture Services |
| RIG | Reuse Library Interoperability Group |
| PPD | Program Package Document |
| ADA | Air Defense Artillery |