Line Marking - Swing Stand with Aluminium Metal SignThis item is a complete unit comprising both the sign and stand. We do sell swing stands and sign separately. For swing stand only. Click Here For sign only. Click here The Line Marking Sign is a special sign used for swing sets in playgrounds. It helps mark the area where swings should be placed to ensure they are safe for children to use. The sign makes sure there is enough space around the swings so that kids can swing without hitting anything.