what is the purpose of this rectangular shape in a flowchart? input or output process decision start or end

what is the purpose of this rectangular shape in a flowchart? input or output process decision start or end
Answer
Brief Explanations:
In flowchart - design conventions, a rectangle represents a process step. Input or output is usually represented by a parallelogram, a decision by a diamond, and start or end by an oval.
Answer:
process