Wikipedia:Copyright problems/2021 March 31

31 March 2021

 * Wingtip vortices ([ history] · [ last edit] · rewrite) from https://jazzroc.wordpress.com/tag/vortex/. Earwig's copyvio detector came up with a 94.1% similarity. Lomrjyo (talk) 20:30, 31 March 2021 (UTC)
 * Special:diff/300150095 is the insertation. Everything earlier is clean. Sennecaster   ( What now? ) 03:44, 7 April 2021 (UTC)


 * Pictogram voting support.svg Backwardscopy. Tag and explanation placed at talk page. MER-C 16:41, 9 April 2021 (UTC)