I went to a class D airport for some pattern work. While inbound, after contacting tower and announcing intentions, the conversation went mostly like this: Tower: "enter left downwind for runway 5, report when midfield on the downwind" Me: acknowledge the above Tower: "I see you inbound on the downwind, cleared for the option runway 5" Me: acknowledge cleared to land I never reported midfield downwind and proceeded to do my pattern work and went back to my home airport. ---------- So, the question is "was I still supposed to report midfield downwind even after the tower reported visually seeing me, or did their visually seeing me fulfill the expectation?" I am a simple guy and since the tower didn't say anything about my not reporting it, life is good and I live to fly another day. But, I've wondered about what the CORRECT answer is.