I was setting up a recurring appointment today in Outlook that has "no end". I hate recurring appointments that are more than once a month because when I look at the thumbnail of the month calendar it shows many days in bold. Sometimes the appointment doesn't justify that. I just realized that if I mark the event Show As "Free", I don't get the "boldiness"
I've been using Outlook for many years now. Boy do I feel stupid! I think this post deserves a new category/tag