| Acronym | Meaning |
 | HI | High |
| IPR | Ils Program Review |
| ISI | Information Spectrum Inc |
| ISG | Instructional Systems Group |
| ISI | Interim Support Item |
| ISEO | In-service Engineering Office |
| TCCB | Trainer Change Control Board |
| DSSA | Domain Specific Software Architecture |
| TMPODS | Technical Manual Print-on-demand System |
| ISIL | Interim Support Items List |
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