aque)</code>
<div class="block">Sets opaque data that can be used by the renderer.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/atakmap/android/maps/graphics/GLMapItem2.html#startObserving--">startObserving</a></span>()</code>
<div class="block">Start observing the subject.</div>
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<td class="colFirst"><code>void</code></td>
<td class="co