User talk:139.5.27.44

January 2019
Welcome to Wikipedia. Thank you for reverting your recent experiment&#32;with the page Lens (optics). Please take a look at the welcome page to learn more about contributing to our encyclopedia. If you would like to experiment further, please use the sandbox instead, as someone could see your edit before you revert it. Thank you. ᴀɴᴏɴʏᴍᴜᴤᴤ ᴜᴤᴇʀ (ᴛᴀʟᴋ) 14:36, 11 January 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.