Revision control
++ <svg width="400" height="400" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
++
++ <filter id="flood" x="0" y="0" width="1" height="1" filterUnits="objectBoundingBox" primitiveUnits="objectBoundingBox" >
++ <feFlood flood-color="green" x="0" y="0" width="1" height="1"/>
++ </filter>
++
++ <marker
++ id="arrow2"
++ viewBox="0 0 10 10"
++ refX="5"
++ refY="5"
++ markerWidth="6"
++ markerHeight="6"
++ orient="90">
++ <path fill="red" d="M 0 0 L 10 5 L 0 10 z" />
++ </marker>
++
++ <path
++ d="M 10 30
++ L 30 40
++ L 50 20"
++ stroke="black"
++ stroke-width="3"
++ fill="none"
++ marker-start="url(#arrow2)"
++ marker-mid="url(#arrow2)"
++ marker-end="url(#arrow2)"
++ filter="url(#flood)"/>
++
++ <path
++ d="M 10 30
++ L 30 40
++ L 50 20"
++ stroke="black"
++ stroke-width="3"
++ fill="none"
++ marker-start="url(#arrow2)"
++ marker-mid="url(#arrow2)"
++ marker-end="url(#arrow2)"/>
++
++ </svg>