32 Space
#todo
A space is the totality of what a user can experience. Concretely, a space can include the scene, its state, how it evolves and responds to user input, its recorded history, and any data stored within it along with how that data is presented.
In this section we define a few potential constituents of a space besides the scene. The constituents defined here should not be considered the only possible parts of a space beyond the scene.
State
A state of the scene is