User talk:Gtriple

February 2013
Hello, I'm Altaïr. I wanted to let you know that I undid one of your recent contributions, such as the one you made to this edit to Four-bar linkage, because it didn’t appear constructive to me. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks, Altaïr Ibn-La'Ahad 14:41, 19 February 2013 (UTC)