Edge Orientation
From Speedsolving.com Wiki
The orientation of edges of the cube, often only EO (edge orientation). Methods such as Roux (6 edges), ZZ (all) and Petrus (7) include this as a sub step. Also other puzzles such as the Square-1 have EO as a common sub step (For Sq-1 it is actually more a separation of edges to the correct layers but it is always refered to as edge orientation).
