VLEXAMPLE - BASIC 6 vlex="d:M100,{$cY} Q{max(100,$cX-300)},200 {$cX},{$cY} T{$x-100},{$cY}" - the gray path should be centered vertically at stage - it should form a wave around stage´s center - it should strech between stage´s left and right edge with a gap of 100px 
                VLEXAMPLE - BASIC 6

                vlex="d:M100,{$cY} Q{max(100,$cX-300)},200 {$cX},{$cY} T{$x-100},{$cY}"

                - the gray path should be centered vertically at stage
                - it should form a wave around stage´s center
                - it should strech between stage´s left and right edge with a gap of 100px