Disconnectors can be operated either manually or automatically. Motor controllers can be manually, remotely or automatically operated. Models may be created automatically or manually. These valves could be controlled both manually and automatically. Each gate weighs and can be operated manually or automatically. Content curation can be carried out either manually or automatically or by combination of them. This process is performed manually or partially automated. This meant that cargo had to be manually stored. These files are created once, often manually, and infrequently updated. It is also hard to treat both manually and mechanically. They may be either manually or motor controlled. Both types of players also provided a button for manually changing channels. It can be done manually or with computers. Armament is roof-mounted and can be either manually or remotely operated. Manual testing is the process of manually testing software for defects.