The Insert Edge Loop Tool settings editor appears.
The edge is selected and a green vertex appears on the edge you clicked to indicate the selection.
All of the edges between the first and second edges you clicked become selected and a dotted green edge loop preview locator appears across the selected edge ring. The preview locator indicates where the new edge loop will be inserted across the mesh.
An edge loop is inserted at the location that was indicated by the edge loop locator on the polygonal mesh. The new edge loop remains selected so that you can perform additional operations on it.
For example, selecting the Move Tool to move the selected edge loop, selecting to extrude the selected edge loop, or converting the edge loop selection to faces.