and just to make the point more firmly, PDP-11 didn't have a preincrement/postincrement pair of instructions, it simply had indexing with post-increment of the

and just to make the point more firmly, PDP-11 didn't have a preincrement/postincrement pair of instructions, it simply had indexing with post-increment of the index or pre-decrement, i.e. one paradigm, not two. Or in other words, "stack" behavior.