Level 0 pipeline diagram. The different shapes and colours have specific meanings. Pipeline tasks are identified in light blue rectangles. The beginning and ending products are shown as light green parallelograms. Calibration items are the dark green parallelograms. Calibration can be either obtained from the calibration tree or created by a pipeline step. Task options are identified within red rhombuses connected to a task. A red rhombus connected directly to the pipeline indicates a quality-check step.