See Exosphere in the Glossary

• The Exosphere is the largest, most inclusive AgentSpace.

aSimonG: However, the Exosphere is not the boundary of any identifiable Agent. So this breaks the necessary connection between AgentSpaces and Agents.

Not quite sure why the term “exosphere” is used in preference to “MAP world”, “world MAP” or “universe”, which would seem more easily comprehensible.