User talk:73.252.204.19

February 2019
Hello, I'm CASSIOPEIA. I noticed that in this edit to Hypersonic speed, you removed content without adequately 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, the removed content has been restored. 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.  CASSIOPEIA(talk) 02:17, 27 February 2019 (UTC)
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Please refrain from making unconstructive edits to Wikipedia, as you did at Hypersonic speed. 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. CalOtter (talk) 02:17, 27 February 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.