User talk:2404:3C00:482F:A3C0:3D78:DCAE:1578:2601

February 2022
Hello, I'm ComplexRational. An edit that you recently made to Mass number 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) 16:40, 24 February 2022 (UTC)