User talk:2600:6C50:80:C0:0:0:0:1103

May 2020
Hello, I'm DB1729. I wanted to let you know that one or more of your recent contributions to History of aerodynamics 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. Thanks. DB1729 (talk) 20:52, 18 May 2020 (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.

Please refrain from making unconstructive edits to Wikipedia, as you did at History of aerodynamics. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. 2601:1C0:1:B78C:78CB:AC70:E468:A57C (talk) 20:55, 18 May 2020 (UTC)