Revision control
++ <svg
++ width="230"
++ height="350"
++ xmlns="http://www.w3.org/2000/svg"
++ xmlns:xlink="http://www.w3.org/1999/xlink">
++ <filter id="blurMe5">
++ <feGaussianBlur in="SourceGraphic" stdDeviation="5" />
++ </filter>
++ <filter id="blurMe1">
++ <feGaussianBlur in="SourceGraphic" stdDeviation="1" />
++ </filter>
++ <filter id="blurMe05">
++ <feGaussianBlur in="SourceGraphic" stdDeviation="0.5" />
++ </filter>
++ <filter id="blurMe5-2">
++ <feGaussianBlur in="SourceGraphic" stdDeviation="5 2" />
++ </filter>
++ <filter id="blurMe5-0">
++ <feGaussianBlur in="SourceGraphic" stdDeviation="5 0" />
++ </filter>
++
++ <circle cx="60" cy="60" r="50" fill="green" />
++ <circle cx="170" cy="60" r="50" fill="green" filter="url(#blurMe5)" />
++ <circle cx="60" cy="170" r="50" fill="green" filter="url(#blurMe1)" />
++ <circle cx="170" cy="170" r="50" fill="green" filter="url(#blurMe05)" />
++ <rect x="10" y="230" width="100" height="100" fill="green" filter="url(#blurMe5-2)" />
++ <rect x="120" y="230" width="100" height="100" fill="green" filter="url(#blurMe5-0)" />
++ </svg>