Cable identification can be performed in many ways. Electric grid cables are commonly identified with color, each color stands for a specific type of cable. Electronic devices may also have their wire marked, by colors are not necessarily bound to wire types. Color identification is very effective visually, but may not be understandable for everyone. Commonly cables are marked with letters (code or general cable name). A popular solution is marker labels, plates with adhesives on one side and blank/pre-printed information on the other. There are also colored clamp-on markers with space for writing/labels.