operation in Yolov5/yolo/dataset/augment_data.py 

In Yolov5/yolo/dataset/augment_data.py 
Yolov5/yolo/dataset/augment_data.py", line 103
    M = T @ S @ R @ P @ C  # order of operations (right to left) is IMPORTANT
What operation it is doing?


And can I save the trained model and use that for further uses.

Thanks
