Meaning of Middle digit filling systems?

Answer 1

Middle digit filling systems are organizational methods used primarily in records management and filing systems. They involve categorizing and storing documents based on the middle digit of a numerical code, rather than the first or last digit. This approach allows for more efficient retrieval and reduces congestion in filing systems, as it spreads out records more evenly across different categories. It is especially useful in large databases or libraries where records need to be accessed quickly and systematically.