diff --git a/include/PolyVox/AmbientOcclusionCalculator.inl b/include/PolyVox/AmbientOcclusionCalculator.inl
index 46eb231e..19336b2b 100644
--- a/include/PolyVox/AmbientOcclusionCalculator.inl
+++ b/include/PolyVox/AmbientOcclusionCalculator.inl
@@ -25,6 +25,16 @@
 namespace PolyVox
 {
 	/**
+	 * This function fills a 3D array with ambient occlusion values computed by raycasting through the volume.
+	 * This approach to ambient occlusion is only appropriate for relatvely small volumes, otherwise it will 
+	 * become very slow and consume a lot of memory. You will need to find a way to actually use the generated
+	 * ambient occlusion data, which might mean uploading it the the GPU as a volume texture or sampling on
+	 * the CPU using the vertex positions from your generated mesh.
+	 *
+	 * In practice we have not made much use of this implementation ourselves, so you may find it needs some
+	 * optimizations or improvements to be useful. It is likely that there are actually better approaches to
+	 * the ambient occlusion problem.
+	 *
 	 * \param volInput The volume to calculate the ambient occlusion for
 	 * \param[out] arrayResult The output of the calculator
 	 * \param region The region of the volume for which the occlusion should be calculated
diff --git a/include/PolyVox/BaseVolume.h b/include/PolyVox/BaseVolume.h
index 4129301f..a640ddc6 100644
--- a/include/PolyVox/BaseVolume.h
+++ b/include/PolyVox/BaseVolume.h
@@ -32,8 +32,8 @@
 
 namespace PolyVox
 {
-	/// The BaseVolume class provides common functionality and an interface for other volume classes to implement. You should not try to create an instance of this
-	/// class directly. Instead you should use RawVolume or PagedVolume.
+	/// The BaseVolume class provides common functionality and an interface for other volume classes to implement.
+	/// You should not try to create an instance of this class directly. Instead you should use RawVolume or PagedVolume.
 	////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 	/// More details to come...
 	////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/include/PolyVox/BaseVolume.inl b/include/PolyVox/BaseVolume.inl
index 679eea5c..a54227f4 100644
--- a/include/PolyVox/BaseVolume.inl
+++ b/include/PolyVox/BaseVolume.inl
@@ -119,12 +119,12 @@ namespace PolyVox
 	}
 
 	////////////////////////////////////////////////////////////////////////////////
-	/// Note: This function needs reviewing for accuracy...
+	/// 
 	////////////////////////////////////////////////////////////////////////////////
 	template <typename VoxelType>
 	uint32_t BaseVolume<VoxelType>::calculateSizeInBytes(void)
 	{
-		return this->getWidth() * this->getHeight() * this->getDepth() * sizeof(VoxelType);
+		POLYVOX_THROW(not_implemented, "You should never call the base class version of this function.");
 	}
 }