Index - H
| Hair | Diagrams.TwoD.Polygons | 
| halfDart | Diagrams.TwoD.Arrowheads, Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| halfDart' | Diagrams.TwoD.Arrowheads, Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| halfTurn | Diagrams.Angle, Diagrams, Diagrams.Prelude | 
| has | Diagrams.Prelude | 
| HasArcLength | Diagrams.Parametric, Diagrams, Diagrams.Prelude | 
| HasBasis | Diagrams, Diagrams.Prelude | 
| HasLinearMap | Diagrams, Diagrams.Prelude | 
| hasn't | Diagrams.Prelude | 
| HasOrigin | Diagrams.Transform, Diagrams, Diagrams.Prelude | 
| HasPhi | Diagrams.Angle, Diagrams, Diagrams.Prelude | 
| HasR | Diagrams.TwoD.Types, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| HasStyle | Diagrams, Diagrams.Prelude | 
| HasTheta | Diagrams.Angle, Diagrams, Diagrams.Prelude | 
| hcat | Diagrams.TwoD.Combinators, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| hcat' | Diagrams.TwoD.Combinators, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| headGap | Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| headLength | Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| headStyle | Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| headTexture | Diagrams.TwoD.Arrow, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| height | |
| 1 (Function) | Diagrams.TwoD.Size, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| 2 (Function) | Diagrams.Backend.CmdLine | 
| hendecagon | Diagrams.TwoD.Shapes, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| heptagon | Diagrams.TwoD.Shapes, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| hexagon | Diagrams.TwoD.Shapes, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| Highlight | |
| 1 (Type/Class) | Diagrams.ThreeD.Attributes, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| 2 (Data Constructor) | Diagrams.ThreeD.Attributes, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| highlight | Diagrams.ThreeD.Attributes, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| highlightIntensity | Diagrams.ThreeD.Attributes, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| highlightSize | Diagrams.ThreeD.Attributes, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| holes | Diagrams.Prelude | 
| holesOf | Diagrams.Prelude | 
| holesOn | Diagrams.Prelude | 
| holesOnOf | Diagrams.Prelude | 
| honeydew | Diagrams.Prelude | 
| horizontalFieldOfView | Diagrams.ThreeD.Camera, Diagrams.ThreeD, Diagrams, Diagrams.Prelude | 
| hotpink | Diagrams.Prelude | 
| href | Diagrams, Diagrams.Prelude | 
| hrule | Diagrams.TwoD.Shapes, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| hsep | Diagrams.TwoD.Combinators, Diagrams.TwoD, Diagrams, Diagrams.Prelude | 
| huge | Diagrams.Attributes, Diagrams, Diagrams.Prelude |