'."\n"; ?> SVG radial gradient exemple
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">

<svg
   xmlns="http://www.w3.org/2000/svg"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   version="1.0"
   x="0" y="0"
   width="260" height="180"
   xml:space="preserve">

  <defs id="def_A">
    <radialGradient id="Gradient_B"
                    gradientUnits="userSpaceOnUse"
                    cx="130" cy="90" r="125" fx="130" fy="90">
      <stop offset="0.2" stop-color="#4488ff" />
      <stop offset="0.7" stop-color="#ddaa44" />
      <stop offset="1"   stop-color="#ee1122" />
    </radialGradient>
  </defs>

  <rect id="rectangle_A"
     x="0"  y="0"
     width="260"  height="180"
     style="fill:url(#Gradient_B);" />

</svg>