namark/libsimple_motion: what even is a tween? @ 6db2dc974a27d1fafc33201942b6b3a33d8c8fa9

what even is a tween?

namark 6db2dc974a allinclude		10 miesięcy temu
source	6db2dc974a allinclude	10 miesięcy temu
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README.md	564130634c Initial state extracted from sketchbook.	4 lat temu

what even is a tween? shorthand for between?? what even is between???