A Link Diagram is a visual representation used to illustrate the relationships and connections between different elements within a system or process. It helps in understanding how various components interact with one another, making it easier to analyze complex information. Link diagrams are commonly used in fields like project management, network design, and system engineering. In a link diagram, nodes represent the elements, while lines or arrows indicate the connections between them. This format allows for quick identification of dependencies and pathways, facilitating better decision-making and problem-solving. Link diagrams can be created using various software tools or drawn by hand, depending on the complexity of the information being represented.