Help! I've hidden my content library and I can't get it back.

in New Users
I opened my content library and attempted to widen the actualy content listings, and now it seems to be completely hidden to the left of the pane.
I may click the line that turns yellow, but when I either do that or attempt to drag it out.
I'm sure there's something easy that I don't know about or see, but still, can anyone help me?
Comments
Go to the top menu and try Window>Workspace>Off Screen pane (Tab) Groups... That should bring up a dialog box which will show any panes outside the viewable workspace. Clicking on it should bring it back into view.