Canon law is the body of laws and regulations made by or adopted by ecclesiastical authority, for the government of the Christian organization and its members.
The difference indeed exists between the Canon Law of 1917, of 1983, the earlier Liber Extra (1234), and Canon Law in general. The Canon Law in general is as old as the Church.
A howitzer is a kind of cannon (note spelling). The Canon Law of 1983 is a kind of Canon Law. When discussing the sovereignty of bishops, I was making a reference to Canon Law in general, not any particular codification of it.
My mistake. My example of a howitzer as a "canon" was in error. May I use old age as an excuse?
In any event, using a canon of a forged document as "proof" of anything is proof of nothing.