User talk:221.126.252.98

January 2021
Hello, and welcome to Wikipedia. This is a message letting you know that one or more of your recent edits to Ballpoint pen have been undone by an automated computer program called ClueBot NG.

Thank you. ClueBot NG (talk) 03:37, 19 January 2021 (UTC)
 * ClueBot NG makes very few mistakes, but it does happen. If you believe the change you made was constructive, please read about it, [ report it here], remove this message from your talk page, and then make the edit again.
 * For help, take a look at the introduction.
 * The following is the log entry regarding this message: Ballpoint pen was changed by 221.126.252.98 (u) (t) ANN scored at 0.959706 on 2021-01-19T03:37:00+00:00

Please do not add or change content, as you did at Charles K. Kao, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Bestagon (talk) 02:30, 20 January 2021 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

July 2022
Hello, I'm 2601:5CC:8300:A7F0:35D1:A920:4983:B8E3. I wanted to let you know that one or more of your recent contributions have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse or the Help desk. Thanks. 2601:5CC:8300:A7F0:35D1:A920:4983:B8E3 (talk) 05:51, 21 July 2022 (UTC)