User talk:82.178.172.139

Recent edits to Cho Yong-pil
Hello. I noticed that you recently made a contribution to the Cho Yong-pil article that seemed to be a test. Your test worked! However, test edits on live articles disrupt Wikipedia and may confuse readers. 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! Materialscientist (talk) 05:18, 25 April 2015 (UTC)

May 2021
Hello, I'm ComplexRational. An edit that you recently made to Electromagnetic spectrum seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! ComplexRational (talk) 02:11, 30 May 2021 (UTC)