HTML Tag ##All browsers support the tag. # definition and usage (Recommended learning: html tutorial ) # Frameset element can define a frame set. It is used to organize multiple windows (frames). Each framework has separate documentation. In its simplest application, the frameset element simply specifies how many columns or rows exist in the frameset. You must use cols or rows attributes. Differences between HTML and XHTMLNONE Tips Note: If you wish to validate a page that contains frames, make sure the DTD is set to "Frameset DTD". Read more about XHTML validation. Important: You cannot use the tag with the tag. However, if you need to add a tag for browsers that don't support frames, be sure to place the tag within the tag! ExampleSimple three-frame page: Copy after login