Where-is-Quick-Guide-for-WL6-to-WL7-Strategy-conversion

I saw an image of a very helpful looking graphic comparison image file for WL6 to WL7 code equivalents. I think it said "A picture is worth a thousand words". I think it was made by Cone. I just cannot find it again. It had a lot of circles and arrows. I'm working of migrating a lot of code and looking for all the help I can get before asking you too many questions. If you could point me to that and any other conversion documentation I would really appreciate it.
Thank you,