Dear Markus,
please stop confusing system and domains!
Whatever the definition there are many needs to support. American is poor
enough in terms not to reduce their number :-)
Intuitively domain relates to what belong to someone or which is stable
enough with boarders
System relates to someting whch is assembled for a purpose and which may
expand. And uses differnt domains. Ex. The moon belongs to the Earth Domain
and the Earth participate to the Sun system.
Or will you support the SNS for system name system? :-)
jfc