| Radial | Data.GraphViz.Attributes.Complete |
| radial | Data.GraphViz.Attributes, Data.GraphViz |
| RandomStyle | Data.GraphViz.Attributes.Complete |
| rangle | Data.GraphViz.Printing |
| Rank | Data.GraphViz.Attributes.Complete |
| rank | Data.GraphViz.Attributes, Data.GraphViz |
| RankDir | |
| 1 (Type/Class) | Data.GraphViz.Attributes.Complete |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Complete |
| RankSep | Data.GraphViz.Attributes.Complete |
| RankType | Data.GraphViz.Attributes.Complete, Data.GraphViz.Attributes, Data.GraphViz |
| Ratio | Data.GraphViz.Attributes.Complete |
| rational | Data.GraphViz.Printing |
| RatioOnly | Data.GraphViz.Attributes.Complete |
| RatioPassCount | Data.GraphViz.Attributes.Complete |
| Ratios | Data.GraphViz.Attributes.Complete |
| Rb | Data.GraphViz.Attributes.Complete |
| rbrace | Data.GraphViz.Printing |
| rbracket | Data.GraphViz.Printing |
| Rdbu | Data.GraphViz.Attributes.Colors.Brewer |
| Rdgy | Data.GraphViz.Attributes.Colors.Brewer |
| Rdpu | Data.GraphViz.Attributes.Colors.Brewer |
| Rdylbu | Data.GraphViz.Attributes.Colors.Brewer |
| Rdylgn | Data.GraphViz.Attributes.Colors.Brewer |
| readDot | Data.GraphViz.Commands.IO |
| readDotFile | Data.GraphViz.Commands.IO |
| Record | Data.GraphViz.Attributes.Complete, Data.GraphViz.Attributes, Data.GraphViz |
| RecordField | Data.GraphViz.Attributes.Complete |
| RecordFields | Data.GraphViz.Attributes.Complete |
| RecordLabel | Data.GraphViz.Attributes.Complete |
| Rect | |
| 1 (Type/Class) | Data.GraphViz.Attributes.Complete |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Complete |
| Rects | Data.GraphViz.Attributes.Complete |
| Red | |
| 1 (Data Constructor) | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Colors.SVG |
| red | Data.GraphViz.Attributes.Colors, Data.GraphViz.Attributes.Complete |
| Red1 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| Red2 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| Red3 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| Red4 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| Reds | Data.GraphViz.Attributes.Colors.Brewer |
| Regular | Data.GraphViz.Attributes.Complete |
| RegularStyle | Data.GraphViz.Attributes.Complete |
| ReMinCross | Data.GraphViz.Attributes.Complete |
| RemoveAndStraighten | Data.GraphViz.Attributes.Complete |
| removeEmptyClusters | Data.GraphViz.Types.Graph |
| renderDot | Data.GraphViz.Printing |
| reparse | Data.GraphViz.Parsing |
| RepulsiveForce | Data.GraphViz.Attributes.Complete |
| Result | Data.GraphViz.Parsing |
| RGB | Data.GraphViz.Attributes.Colors, Data.GraphViz.Attributes.Complete |
| RGBA | Data.GraphViz.Attributes.Colors, Data.GraphViz.Attributes.Complete |
| RightSide | Data.GraphViz.Attributes.Complete |
| RNG | Data.GraphViz.Attributes.Complete |
| Root | |
| 1 (Type/Class) | Data.GraphViz.Attributes.Complete |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Complete |
| RosyBrown | |
| 1 (Data Constructor) | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Colors.SVG |
| RosyBrown1 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RosyBrown2 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RosyBrown3 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RosyBrown4 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| Rotate | Data.GraphViz.Attributes.Complete |
| Rotation | Data.GraphViz.Attributes.Complete |
| Rounded | Data.GraphViz.Attributes.Complete |
| rounded | Data.GraphViz.Attributes, Data.GraphViz |
| Row | Data.GraphViz.Attributes.HTML |
| RowSpan | Data.GraphViz.Attributes.HTML |
| RoyalBlue | |
| 1 (Data Constructor) | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| 2 (Data Constructor) | Data.GraphViz.Attributes.Colors.SVG |
| RoyalBlue1 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RoyalBlue2 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RoyalBlue3 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| RoyalBlue4 | Data.GraphViz.Attributes.Colors.X11, Data.GraphViz.Attributes, Data.GraphViz |
| rparen | Data.GraphViz.Printing |
| Rt | Data.GraphViz.Attributes.Complete |
| runCommand | Data.GraphViz.Commands.IO |
| runGraphviz | Data.GraphViz.Commands, Data.GraphViz |
| runGraphvizCanvas | Data.GraphViz.Commands, Data.GraphViz |
| runGraphvizCanvas' | Data.GraphViz.Commands, Data.GraphViz |
| runGraphvizCommand | Data.GraphViz.Commands, Data.GraphViz |
| runParser | Data.GraphViz.Parsing |
| runParser' | Data.GraphViz.Parsing |