User talk:Mattchaos123

March 2013
Hello, I'm Sunray. I wanted to let you know that I undid one or more of your recent contributions to Global Positioning System because it didn't appear constructive. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Sunray (talk) 05:53, 26 March 2013 (UTC)

Please refrain from making test edits in Wikipedia pages, even if you intend to fix them later. Your edits do not appear to be constructive and have been reverted. If you would like to experiment again, please use the sandbox. Thank you. -- Gogo Dodo (talk) 01:58, 27 March 2013 (UTC)