Frames are individual HTML documents that are displayed together in one browser window. For example, you can place the menu bar in one frame and load the main contents of the page in another frame. Now if you add a new section to the web site, you need to modify only the frame containing the menu and the changes would be reflected on the whole site.
When using frames be sure to:
- include the META description and META keywords in the document containing the FRAMESET
- always include a full description of your site along with all the important keywords between the <noframes> - </noframes> tags.