| Acronym | Meaning |
![](file.png) | V&V | Validation And Verification |
![](file.png) | OA | Output Axis |
![](file.png) | TCD | Test Control Document |
![](file.png) | CSAM | Crinkled Single Aluminized Mylar |
![](file.png) | VTN | Verification TestNetwork |
![](file.png) | GCIL | Ground Control Interface Logic |
![](file.png) | DDM | Data Display Monitoring |
![](file.png) | DDPC | Digital Data Processing Center (Complex) |
![](file.png) | ETA | External Tank Attachment |
![](file.png) | EXT | Experiment Terminal (Operator Console On Spacelab) |