From Parallel Lines with the Ends in Tandem, or from other formations with the Ends in Tandem.

Outsides 1/2 Zoom & Hinge as Centers Counter Rotate 1/4.

Fra Parallel Waves:     før Detour   efter	Fra Twin Diamonds:     før Detour   efter
Fra en usædvanlig position:     før Detour   efter

See also Prefer CONCEPT for a variation of Detour.