User talk:199.197.117.22

March 2020
Hello, I'm Thepenguin9. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Fiber-optic communication—because it 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 Help desk. Thanks.  Thepenguin9 (talk''') 18:27, 11 March 2020 (UTC)

Please refrain from attempting to make unconstructive edits to Wikipedia. Your edits appear to constitute vandalism and have been [ disallowed by an edit filter.] If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Materialscientist (talk) 18:38, 11 March 2020 (UTC)

You have been blocked temporarily from editing for making (or attempting to make) disruptive edits that repeatedly triggered the edit filter. Once the block has expired, you are welcome to make useful contributions. If you think there are good reasons for being unblocked, please read the guide to appealing blocks, then add the following text below the block notice on your talk page:. Materialscientist (talk) 18:38, 11 March 2020 (UTC)