2009/4/24 Jay Litwyn brewhaha@freenet.edmonton.ab.ca:
Formally, "IFR" stands for "Instrument Flight Rules". Informally, it means "I Follow Roads".
What was that in response to? It's appeared in gmail as a completely new thread and a search for "IFR" finds only this thread, so I can't see anything that you might be trying to reply to... Please quote emails when replying to them, especially if you are using a mail client/newsreader that breaks threads and are changing subject lines.