User talk:Davidh63

November 2012
Hello, I'm Dicklyon. I noticed that you recently made an edit to OSI model that seemed to be a test. Your test worked! If you want more practice editing, the sandbox is the best place to do so. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. Dicklyon (talk) 01:46, 11 November 2012 (UTC)