caption: The image shows a white background with a diagram of a loop-expression and a cond-expression written on it. The diagram is composed of a series of interconnected lines and shapes, with the words "loop-expression" written in the center. The lines are connected by arrows, indicating the direction of the flow of the loop. The colors used in the diagram are mostly shades of blue, green, and yellow, giving it a vibrant and eye-catching look.