| depending on the optional features | 9 | other |
| for carrying control signals | 4 | purpose |
| no longer | 3 | temporal |
| port → be → required | 77 |
| port → be → necessary | 21 |
| port → be required for → operation | 5 |
| negative | neutral | positive |
| 0.104 | 0.785 | 0.112 |
| Raw frequency | 103 |
| Normalized frequency | 0.567 |
| Modifier score | 0.700 |
| Perplexity | 138.200 |