Index - E
| Each | Optics, Optics.Each |
| each | Optics, Optics.Each |
| element | Optics, Optics.Indexed, Optics.IxTraversal |
| elementOf | Optics, Optics.Indexed, Optics.IxTraversal |
| elements | Optics, Optics.Indexed, Optics.IxTraversal |
| elementsOf | Optics, Optics.Indexed, Optics.IxTraversal |
| elemOf | Optics, Optics.Fold |
| Empty | Optics, Optics.Empty |
| equality | Optics, Optics.Iso |
| equality' | Optics, Optics.Lens |
| exponentiating | Numeric.Optics |