User talk:2600:1700:FCD0:2630:F9F9:3CDC:5EFD:889E

February 2019
Please refrain from making unconstructive edits to Wikipedia, as you did at Retrograde and prograde motion. 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. WolfmanSF (talk) 00:47, 13 February 2019 (UTC)