You can use the following commands to show or hide the individual docking windows.
Error display [Show errors]: Errors are displayed at the bottom of the Messages docking window. If it was not open, it is opened automatically when errors occur. This command can be used to switch it on and off manually.
Restore default [Restore default view] view: Helpful if you have made a lot of changes to the positions of the docking windows and want to restore the default view.