Client Menu Reference : The File Menu : Open Catalog
   
Open Catalog
Opens the Catalog Access Window for the current user on the Catalogs tab. If no user is logged in, the Connect to Cumulus Server window is opened instead.
When opening a catalog you either open it in a separate window or in the window of the current collection. Activate the desired option.
Open Recent Catalog
Opens a submenu that lists all catalogs opened recently. Selecting the entry for a catalog will open it. The submenu also includes an entry that allows you to clear the list of recently opened catalogs.