In a Structure Chart, what does a module or function represent

In a structure chart, a module or function represents a specific task or operation within the system. It is a self-contained piece of code that performs a specific function and can be used repeatedly in the program. Each module or function in the structure chart is represented by a rectangle and is connected to other modules or functions to show the flow of control or data between them. The structure chart provides a visual representation of the system's structure and the relationships between its components.