Is there a keyboard shortcut to open and close these areas? I accidentally closed the panel that has a red circle (I dont know the name of it lol). I had to close everything and load the project again and untick the 'load UI' to restore that panel again. Is there a shortcut to open/close it similar to properties and toolbar panel?  



I tried the answers from the duplicate but I'm talking about specifically the panel on the right side with the red circle on it. I'm just wondering if it has a shortcut button like the toolbar T and properties N panel.
Just keep the cursor in the 3D View and press Shift+spacebar.