This example shows various ways to use annotations.
They can be used to bookmark and describe locations,
move the camera to a predefined point of view on click,
and to provide programmable buttons at specific locations.
About Annotations
Click on the annotation label to move a predefined view.
Click on the icon to execute the specified action.
In this case, the action will bring you to another scene and point cloud.
About Annotations 2
Suitable annotation positions and views can be obtained by
looking up the current camera position and target in the "Scene" panel,
or by evaluating following lines in your browser's developer console: