| Clyde | Diplomacy.Province |
| Coastal | Diplomacy.Province |
| commonCoasts | Diplomacy.Province |
| commonNeighbours | Diplomacy.Province |
| Constantinople | Diplomacy.Province |
| Continue | Diplomacy.OrderType |
| continue | Diplomacy.Game |
| ContinueObject | Diplomacy.OrderObject |
| continueSubjects | Diplomacy.OrderValidation |
| continueSubjectVOC | Diplomacy.OrderValidation |
| ContinueValidSubject | Diplomacy.OrderValidation |
| Control | Diplomacy.Control |
| control | Diplomacy.Control |
| controller | Diplomacy.Control |
| Convoy | Diplomacy.OrderType |
| ConvoyNoRoute | Diplomacy.OrderResolution |
| ConvoyObject | Diplomacy.OrderObject |
| ConvoyRoute | Diplomacy.OrderResolution |
| ConvoyRouteCut | Diplomacy.OrderResolution |
| ConvoyRoutes | |
| 1 (Type/Class) | Diplomacy.OrderResolution |
| 2 (Data Constructor) | Diplomacy.OrderResolution |
| convoyRoutes | Diplomacy.OrderResolution |
| convoyRoutesNonParadox | Diplomacy.OrderResolution |
| convoyRoutesParadox | Diplomacy.OrderResolution |
| convoySubject | Diplomacy.OrderObject |
| convoyTarget | Diplomacy.OrderObject |
| ConvoyValidConvoySubject | Diplomacy.OrderValidation |
| ConvoyValidConvoyTarget | Diplomacy.OrderValidation |
| ConvoyValidSubject | Diplomacy.OrderValidation |
| convoyVOC | Diplomacy.OrderValidation |
| ConvoyVoid | Diplomacy.OrderResolution |
| country | Diplomacy.Province |