In a flow diagram, what does a parallelogram typically represent?

In a flow diagram, a parallelogram is used to represent inputs and outputs. This shape indicates where data enters or leaves a process, such as user inputs being provided to a system or results being generated by that system for the user. Using a parallelogram helps to visually distinguish these operations from processes, which are typically represented by rectangles, and decisions, which are shown using diamonds. The use of specific shapes for different functions in flow diagrams enhances clarity and understanding of the process being modeled.