What happened to Layers from version 2017 to version 2021?

What happened to Layers from version 2017 to version 2021?

They were renamed ‘Tags’…
Otherwise they work much the same.
In v2021 you can now make groups of them inside subfolders…
Why not read the release notes…

Release notes:
https://help.sketchup.com/en/release-notes

Probably ought to read the release notes for 2018, 2019, and 202 while you’re at it.

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