RelationshipPattern

EBNF

RelationshipPattern = (LeftArrowHead, [SP], Dash, [SP], [RelationshipDetail], [SP], Dash, [SP], RightArrowHead)
                    | (LeftArrowHead, [SP], Dash, [SP], [RelationshipDetail], [SP], Dash)
                    | (Dash, [SP], [RelationshipDetail], [SP], Dash, [SP], RightArrowHead)
                    | (Dash, [SP], [RelationshipDetail], [SP], Dash)
                    ;

Referenced from

• PatternElement
• PatternComprehension
• Atom