PDF (adobe.com)

Understanding frames and framesets

A page that contains frames is called a frameset. A frameset is an individual file that defines the layout and properties of all the frames on a page, including the number of frames, the size and placement of the frames, and the web address (URL) of the page that initially appears in each frame.

A frame is an organizational element of a frameset page. It’s easy to think of the page that’s currently displayed in a frame as an integral part of the frame, but each frame is just a container for a page. Pages that initially load in the frames are referenced by the frameset, but any page can be loaded in a frame.

The content that appears in each frame is saved in separate files. A page with three frames—navigation, logo, and main content—actually has four files: the frameset and three web pages, one for each frame. When a website visitor clicks a link in one frame, a new page can be loaded in another frame. There can be a different page for each link in a frame.

A frame can load pages from the same or different websites. So you might be able to edit content in some, but not all, frames.