Frames divide the document window into regions, where each region displays a different HTML file. Frames within a document scroll independently.
Users can move the borders between frames.
COLS attribute means that these frames will be laid out in columns. The value of COLS, in this case, is the width of the columns in pixels. The NAME attribute allows us to access the frame through the object hierarchy. Advantages Keeps navigation tools from scrolling away. The photo gallery is a nice example.