ml">CollisionModel</a> or
	<a href="physics/collisionshape.html">CollisionShape</a>.
</p>

<h4 id="trigger">
	Trigger
</h4>

<p>
	Triggers are special shapes or volumes that can detect if a rigidbody enters
	its	volume.
</p>

<h4 id="collisiongroup">
	Collision Group
</h4>

<p>
	Collision groups are groups that the rigidbody, trigger or other physics
	construct is a part of. The object can be a part of several groups. They are
	represented by bits in a bitmask.
</p>

<p>
	It is more efficient for an object 