A context level diagram or a system context diagram is a popular tool to depict a system or a context in a project. In the field of software engineering, a context level diagram is used to clearly depict the boundaries of a software system. Initially conceptualized for systems analysis and design, a context level diagram is also used to show the flow of data. To draw a context level diagram, begin by drawing a circle in the middle containing the context of the diagram. From here on the other details are mapped out. Usually, a context level diagram is used to explain the project details to stakeholders. Therefore, simple language is used while making it. A context level diagram is a complex one because it explains all the entities of a project. In other words, it is a highly detailed diagram.