You can assign a name to objects in the outliner. These names are typically used to tell manipulators what objects in a scene to transform or manipulate in some defined way.
You can assign an object a name in the blender outliner.
If you have multiple objects with the same name you can use a "." as a delineator and assign an index number. Seahaven will only look at the prefix if you try to modify these objects later with a manipulator.
This is a great way to manipulate large groups of objects.
In this example, the user is using a Blender empty to define a possible location to place a person.