Marker flipping line.
<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/sorting_flipping_markers.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...700#post201756
https://www.homemadetools.net/forum/...836#post102618
https://www.homemadetools.net/forum/...673#post193666
https://www.homemadetools.net/forum/...015#post191296
https://www.homemadetools.net/forum/...013#post157043
