Blender 2.54.0 Did Tool Shelf Change?

Dear Community,

I was attempting to model a hat, but when I added my circle I noticed that “Operators” was missing from the tool shelf. Since it was in previous versions, I can only wonder what happened and how can I fix this.

Thank you for your time.

Update: found out that I dragged the divider all the way to the bottom, thus hiding it. So now the question is how do I bring it back?

Fix: Found out that the plus icon is not only for bringing back headers. It’s for the tool shelf as well.

To open and hode the toolshelf press T.