Unity Project

reference
https://cardgames.io/yahtzee/

Library/PackageCache/com.unity.timeline@1.2.15/Documentation~/trk_dup.md

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+# Duplicating tracks
+
+Duplicating a track copies its clips, blends, and Inspector properties. If the duplicated track is bound to a GameObject, the binding is reset to **None**.
+
+![Track binding for a duplicated track is reset to **None**](images/timeline_track_duplicate.png)
+
+_Track binding for a duplicated track is reset to **None**_
+
+There are many ways to duplicate tracks:
+
+* Select a track. Right-click an empty area in the Track list and select **Duplicate** from the context menu.
+* Select a track. Hold Command/Control and press D.
+* Select a track. Hold Command/Control and press C, for copy, then press V, for paste.
+* Right-click a track and either select **Duplicate** from the context menu or hold Command/Control and press D.