<ink xmlns="...">
<captureDevice manufacturer="..." sampleRate="100" ... >
...
</captureDevice>
<!-- Simple input with coordinate pairs only -->
<trace id="tr1">
10 0 9 14 8 28 7 42 6 56 6 70 8 84 8 98 8 112 9 126 10 140
...
</trace>
<!-- Pairs with velocity and acceleration -->
<trace id = "tr2">
1125 18432'23'43"7"-8 3-5+7
...
</trace>
</ink>
