Frames allow dividing a browser window into multiple panes or frames, each displaying a separate HTML document. This document discusses how to structure frames using the <FRAMESET> tag and attributes like ROWS and COLS to position frames. It also covers specifying frame sources and sizes, controlling scroll bars, borders, and margins. The <NOFRAMES> tag provides content for non-frame supporting browsers. Magic target names and the <BASE> tag help manage hyperlinks between frames.