What are the layers types?

Hello,

Hope all of you reading this post is doing well.
I was wondering if anyone knows what the keyhole icon on my layer represents.

Thanks!

sg.jpg

That icon shows that you have the onion skinning feature on.
You can’t see it for the rest because they are all groups.
I don’t recommend leaving it on unless you actually need
to use the feature.

Thank you so much for your reply rkriz!

Just one more question with this feature:
When I click on the icon, it turns into red, and what exactly does this do?

Thanks!

When the icon is red, the layer is actively part of the onion skinning.
When it’s not red, the layer is not being onion skinned.