Editing Sail components (section)

===Quadrilateral===
{{See also|Gaff rig|Gunter rig|Lug sail|Junk rig}}
[[Gaff rig|Gaff]], [[Gunter rig|gunter]], [[lug sail|lug]], [[Junk Rig|junk]] and some [[spritsail|sprit]] sails have four sides and are set ''fore and aft'' so that one edge is leading into the wind, forming an ''asymmetric'' quadrilateral shape. Naming conventions are consistent with triangular sails, except for the top edge and corners, as [[#Shape|explained below]].<ref name = Cunliffe/>