User talk:Chapman12345678

December 2012
Please refrain from making test edits in Wikipedia pages, such as those you made to Talk:Volcano, 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. Materialscientist (talk) 23:45, 5 December 2012 (UTC)

February 2013
Hello, I'm David Biddulph. I noticed that you recently removed some content from Software engineering without explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an edit summary. If this was a mistake, don't worry: I restored the removed content. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! - David Biddulph (talk) 12:53, 25 February 2013 (UTC)