Revision control
++ <svg width="200" height="200" viewBox="30 30 130 130" xmlns="http://www.w3.org/2000/svg">
++ <filter id="feOffset" x="-0.1" y="-0.1" width="1.2" height="1.2">
++ <feGaussianBlur in="SourceAlpha" stdDeviation="2" result="blur2" />
++ <feOffset in="blur2" dx="5" dy="5" result="offset2" />
++ <feMerge>
++ <feMergeNode in="offset2" />
++ <feMergeNode in="SourceGraphic" />
++ </feMerge>
++ </filter>
++
++ <rect
++ x="40"
++ y="40"
++ width="100"
++ height="100"
++ style="stroke: #000000; fill: green; filter: url(#feOffset);" />
++ </svg>