A system for changing the form of a noun
to indicate its case. Latin and Greek "decline" nouns by changing their
endings.
Er, in this case, case means the grammatical
role played by the noun in a larger phrase.
For instance, a noun in the accusative case
is a direct object; a noun in the nominative
case is a subject. Methinks Everything needs a mechanism
for allowing two nodes to have the same
name.