GRASS 6.0.0 (spearfish60):~ > v.out.svg input=soils output=/tmp/output.svg type=poly precision=0
 100%
Extracted 737 areas

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gg="http:/grass.itc.it/2006/gg" viewBox="589444 -4928106 20102 14182">
<title>v.out.svg soils /tmp/output.svg</title>
 <g id="G_Areas" fill="#CCC" stroke="#000" stroke-width="20" >
  <path gg:cat="49" d="M 608141 -4914203 l -26 -77 -7 -18 -6 -6 -1 -24 11 -30 12 -12 18 -12 42 -1 30 -13 12 -12 29 -43 22 -73 35 -49 18 -18 24 -1 66 -14 89 -50 24 -1 12 12 12 -0 25 17 6 -0 31 29 0 6 -12 12 -6 0 -42 19 -65 44 -18 18 -23 31 -28 55 -5 48 -34 79 -34 79 -210 5" />
  <path gg:cat="13" d="M 608351 -4914209 l 34 -79 34 -79 5 -48 28 -55 23 -31 18 -18 65 -44 42 -19 6 -0 12 -12 18 -0 42 -13 30 11 12 12 -4 78 1 24 6 6 -6 6 -5 48 43 41 30 5 24 -7 70 -62 63 -92 17 -30 23 -37 17 -24 -0 -6 41 -43 5 -24 11 -30 99 -117 6 -0 18 -18 30 -7 30 5 43 29 25 23 30 -1 73 16 55 41 1 42 13 30 1 18 12 12 18 -0 19 18 12 -0 6 414 -1195 19" />
  <!-- more paths follow -->
 </g>
</svg>