The term 'FILE-FOLDER FEATURE' can be summarized as a feature that allows users to organize their files and folders into a hierarchical structure. This feature is often found in computer operating systems, such as Windows, macOS, and Linux, and is represented by the 3-letter word 'TAB'. It allows users to create folders and subfolders, which can be used to store and organize files. This feature makes it easier for users to find and access their files quickly and efficiently.