edit mode - Can not select object in other collection - Blender Stack Exchange
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Every Way To Select Objects in Blender - YouTube
Selecting — Blender Manual
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Selecting — Blender Manual
Selecting — Blender Manual
Blender tutorial: selecting and transforming objects
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outliner - Is it possible to select an object in the 3D view, and see it highlighted in the outline view if it is inside a collection? - Blender Stack Exchange