Adding extruded flanges to a chain of solid edges

After starting the Extruded Flange command, proceed as follows.
 

1	Select the profile that will be used to define the direction of the flange. About the profile The profile to be selected must: Be open Contain only lines and arcs Have one of its endpoints on an edge of the solid. To change the selected profile, right-click on Profile, choose Reset in the context menu and select another profile.
2	In the Type drop-down list select Chain.
3	Select the edge on which you want to create the flange. To change the selected edges, right-click on Edges, choose Reset in the context menu and perform selection again.
4	To extend the flanges so that they cover the corner formed by two edges and meet — at a distance given by the Gap value under Local Properties — at the bisector line, select the Miter check box under More Options: Deselect Miter to prevent flanges from covering the corners.
5	Click or to confirm your selections and create the flanges. to discard your changes.