Index - O
| oblique | Diagrams.TwoD.Text, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| ocean | Diagrams.Color.XKCD | 
| oceanBlue | Diagrams.Color.XKCD | 
| oceanGreen | Diagrams.Color.XKCD | 
| ocher | Diagrams.Color.XKCD | 
| ochre | Diagrams.Color.XKCD | 
| oColor | Diagrams.TwoD.Model, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| ocre | Diagrams.Color.XKCD | 
| Octagon | Diagrams.TwoD.Tilings | 
| octagon | Diagrams.TwoD.Shapes, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| oeEnvelope | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| oeOffset | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| offBlue | Diagrams.Color.XKCD | 
| offGreen | Diagrams.Color.XKCD | 
| Offset | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| offset | Diagrams.Trail, Diagrams, Diagrams.Prelude | 
| OffsetClosed | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| OffsetEnvelope | |
| 1 (Data Constructor) | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| 2 (Type/Class) | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| offsetEpsilon | Diagrams.TwoD.Offset | 
| offsetJoin | Diagrams.TwoD.Offset | 
| offsetMiterLimit | Diagrams.TwoD.Offset | 
| OffsetOpen | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| OffsetOpts | |
| 1 (Data Constructor) | Diagrams.TwoD.Offset | 
| 2 (Type/Class) | Diagrams.TwoD.Offset | 
| offsetPath | Diagrams.TwoD.Offset | 
| offsetPath' | Diagrams.TwoD.Offset | 
| offsetSegment | Diagrams.TwoD.Offset | 
| offsetTrail | Diagrams.TwoD.Offset | 
| offsetTrail' | Diagrams.TwoD.Offset | 
| offWhite | Diagrams.Color.XKCD | 
| offYellow | Diagrams.Color.XKCD | 
| OK | Diagrams.Builder | 
| oldlace | Diagrams.Prelude | 
| oldPink | Diagrams.Color.XKCD | 
| oldRose | Diagrams.Color.XKCD | 
| olive | |
| 1 (Function) | Diagrams.Color.XKCD | 
| 2 (Function) | Diagrams.Prelude | 
| oliveBrown | Diagrams.Color.XKCD | 
| oliveDrab | Diagrams.Color.XKCD | 
| olivedrab | Diagrams.Prelude | 
| oliveGreen | Diagrams.Color.XKCD | 
| oliveYellow | Diagrams.Color.XKCD | 
| oMinSize | Diagrams.TwoD.Model, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| onActive | |
| 1 (Function) | Data.Active | 
| 2 (Function) | Diagrams.Prelude | 
| onBasis | Diagrams.Core.Transform | 
| onDynamic | |
| 1 (Function) | Data.Active | 
| 2 (Function) | Diagrams.Prelude | 
| onEnvelope | |
| 1 (Function) | Diagrams.Core.Envelope, Diagrams.Core | 
| 2 (Function) | Diagrams, Diagrams.Prelude | 
| onLine | Diagrams.Trail, Diagrams, Diagrams.Prelude | 
| onlineMain | Diagrams.Backend.PGF.CmdLine | 
| onlineMainWithSurf | Diagrams.Backend.PGF.CmdLine | 
| onLineSegments | Diagrams.Trail, Diagrams, Diagrams.Prelude | 
| OnlineTex | Diagrams.Backend.PGF, Diagrams.Backend.PGF.CmdLine | 
| only | Diagrams.Prelude | 
| onSortedList | Diagrams.Core.Trace | 
| onTrail | Diagrams.Trail, Diagrams, Diagrams.Prelude | 
| op | Diagrams.Prelude | 
| Opacity | Diagrams.Attributes, Diagrams, Diagrams.Prelude | 
| opacity | Diagrams.Attributes, Diagrams, Diagrams.Prelude | 
| OpacityGroup | Diagrams.Core.Types | 
| opacityGroup | |
| 1 (Function) | Diagrams.Core.Types, Diagrams.Core | 
| 2 (Function) | Diagrams, Diagrams.Prelude | 
| 3 (Function) | Graphics.Rendering.PGF | 
| opaque | Diagrams.Prelude | 
| Open | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| openCubic | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| openLinear | Diagrams.Segment, Diagrams, Diagrams.Prelude | 
| Optic | Diagrams.Prelude | 
| Optic' | Diagrams.Prelude | 
| Optical | Diagrams.Prelude | 
| Optical' | Diagrams.Prelude | 
| Option | |
| 1 (Data Constructor) | Diagrams.Prelude | 
| 2 (Type/Class) | Diagrams.Prelude | 
| option | Diagrams.Prelude | 
| Options | |
| 1 (Type/Class) | Diagrams.Backend.Cairo.Internal | 
| 2 (Type/Class) | Diagrams.Backend.Canvas | 
| 3 (Type/Class) | Diagrams.Core.Types, Diagrams.Core | 
| 4 (Type/Class) | Diagrams.Backend.Html5 | 
| 5 (Type/Class) | Diagrams, Diagrams.Prelude | 
| 6 (Type/Class) | Diagrams.Backend.PGF.Render | 
| 7 (Type/Class) | Diagrams.Backend.Postscript | 
| 8 (Type/Class) | Diagrams.Backend.Rasterific | 
| 9 (Type/Class) | Diagrams.Backend.SVG | 
| orange | |
| 1 (Function) | Diagrams.Color.XKCD | 
| 2 (Function) | Diagrams.Prelude | 
| orangeBrown | Diagrams.Color.XKCD | 
| orangeish | Diagrams.Color.XKCD | 
| orangePink | Diagrams.Color.XKCD | 
| orangeRed | Diagrams.Color.XKCD | 
| orangered | |
| 1 (Function) | Diagrams.Color.XKCD | 
| 2 (Function) | Diagrams.Prelude | 
| Oranges | Data.Colour.Palette.BrewerSet | 
| orangeyBrown | Diagrams.Color.XKCD | 
| orangeYellow | Diagrams.Color.XKCD | 
| orangeyRed | Diagrams.Color.XKCD | 
| orangeyYellow | Diagrams.Color.XKCD | 
| orangish | Diagrams.Color.XKCD | 
| orangishBrown | Diagrams.Color.XKCD | 
| orangishRed | Diagrams.Color.XKCD | 
| orbits | Diagrams.TwoD.Polygons | 
| orchid | |
| 1 (Function) | Diagrams.Color.XKCD | 
| 2 (Function) | Diagrams.Prelude | 
| OrderedField | |
| 1 (Type/Class) | Diagrams.Core.Envelope, Diagrams.Core | 
| 2 (Type/Class) | Diagrams, Diagrams.Prelude | 
| orient | Diagrams.TwoD.Polygons | 
| OrientH | Diagrams.TwoD.Polygons, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| OrientTo | Diagrams.TwoD.Polygons, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| OrientV | Diagrams.TwoD.Polygons, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| origin | |
| 1 (Function) | Diagrams.Core.Points, Diagrams.Core | 
| 2 (Function) | Diagrams.Points, Diagrams, Diagrams.Prelude | 
| OriginOpts | |
| 1 (Data Constructor) | Diagrams.TwoD.Model, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| 2 (Type/Class) | Diagrams.TwoD.Model, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| orOf | Diagrams.Prelude | 
| OrRd | Data.Colour.Palette.BrewerSet | 
| ortho | Diagrams.ThreeD.Projection | 
| orthoHeight | Diagrams.ThreeD.Camera, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| OrthoLens | |
| 1 (Data Constructor) | Diagrams.ThreeD.Camera, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| 2 (Type/Class) | Diagrams.ThreeD.Camera, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| orthoWidth | Diagrams.ThreeD.Camera, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| oScale | Diagrams.TwoD.Model, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| other | Diagrams.TwoD.Apollonian | 
| others | Diagrams.TwoD.Apollonian | 
| outer | Diagrams.Prelude | 
| outFile | Diagrams.Builder.CmdLine, Diagrams.Builder | 
| OutlineMap | Graphics.SVGFonts.ReadFont | 
| output | |
| 1 (Function) | Diagrams.Core.Measure, Diagrams.Core | 
| 2 (Function) | Diagrams, Diagrams.Prelude | 
| 3 (Function) | Diagrams.Backend.CmdLine | 
| OutputFormat | Diagrams.Backend.Postscript | 
| OutputType | Diagrams.Backend.Cairo.Internal, Diagrams.Backend.Cairo | 
| outside | Diagrams.BoundingBox | 
| outside' | Diagrams.BoundingBox, Diagrams, Diagrams.Prelude | 
| Over | Diagrams.Prelude | 
| over | Diagrams.Prelude | 
| Over' | Diagrams.Prelude | 
| overA | Diagrams.Prelude |