Which dictionary brand first introduced color-coded page edges to help users quickly navigate between different sections (e.g., blue for verb tables, yellow for main entries)?

The publishing world has seen remarkable innovations in how language reference materials are packaged and marketed. One particular dictionary launch revolutionized the industry with its approach to making language learning more accessible and visually engaging. This poll tests your knowledge of this significant product innovation in the linguistics field that changed how dictionaries are presented to consumers.

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Oxford English Dictionary
Collins COBUILD Dictionary
Merriam-Webster Dictionary
Macmillan English Dictionary