card index dividers

This emoji represents card index dividers used to categorize and store various documents or cards. It's a tool used for systematic organization of information.

This is a traditional file organization system seen in libraries or offices. It is still used in many places for organizing important documents.

This emoji represents the index system that has been the basis of information management since before the digital age. It symbolizes the traditional way of managing information, which is the origin of modern database structures.

While digital tools are widely used these days instead of physical card indexes, the basic concept of information classification still follows this system. It holds particular significance in library science and document management systems.