| C | Wumpus.Core.BoundingBox, Wumpus.Core |
| CapButt | Wumpus.Core.GraphicsState, Wumpus.Core |
| CapRound | Wumpus.Core.GraphicsState, Wumpus.Core |
| CapSquare | Wumpus.Core.GraphicsState, Wumpus.Core |
| CardinalPoint | Wumpus.Core.BoundingBox, Wumpus.Core |
| center | Wumpus.Core.PictureLanguage, Wumpus.Core |
| CFill | Wumpus.Core.PictureInternal |
| CharCode | Wumpus.Core.TextEncoding, Wumpus.Core |
| clamp | Wumpus.Core.Utils |
| Clip | Wumpus.Core.PictureInternal |
| clip | Wumpus.Core.Picture, Wumpus.Core |
| cmax | Wumpus.Core.Utils |
| cmin | Wumpus.Core.Utils |
| CMinMax | Wumpus.Core.Utils |
| commasep | Wumpus.Core.Utils |
| Composite | Wumpus.Core.PictureLanguage, Wumpus.Core |
| content_text | Wumpus.Core.SVG |
| corners | Wumpus.Core.BoundingBox, Wumpus.Core |
| courier48_body_height | Wumpus.Core.FontSize, Wumpus.Core |
| courier48_descender_depth | Wumpus.Core.FontSize, Wumpus.Core |
| courier48_height | Wumpus.Core.FontSize, Wumpus.Core |
| courier48_spacer_width | Wumpus.Core.FontSize, Wumpus.Core |
| courier48_width | Wumpus.Core.FontSize, Wumpus.Core |
| CStroke | Wumpus.Core.PictureInternal |
| cstroke | Wumpus.Core.Picture, Wumpus.Core |
| CTM | |
| 1 (Type/Class) | Wumpus.Core.GraphicsState, Wumpus.Core |
| 2 (Data Constructor) | Wumpus.Core.GraphicsState, Wumpus.Core |
| currentClipLabel | Wumpus.Core.SVG |
| curvedPath | Wumpus.Core.Picture, Wumpus.Core |
| curveTo | Wumpus.Core.Picture, Wumpus.Core |