A replacement for <frame> and <frameset> tags?

[gssi]

HTML5 proposes to invalidate/deprecate the frame and frameset tags. Can anyone identify a 'fulsome' replacement for these elements. [Please reference the structure as demonstrated in 'georgiansoftware.com' username:'Guest' password: 'Guest2009' and described in the document at 'http://georgiansoftware.com/info/wboverview.html'. The internal structure is best viewed in Firebug.]

[JAB Creations]

Obviously HTML5 is not backwards compatible with HTML4 which is disappointing as it should be backwards compatible. The frame and frameset elements (not tags, tags are direct reference the the start or end but the professional way to reference them 99.9% of the time is as elements) are fine as they are. If you can't get the page to validate as HTML5 then use XHTML 1.1.

[zcorpan]

Obviously HTML5 is not backwards compatible with HTML4 which is disappointing as it should be backwards compatible.

You have a different definition of backwards compatibility than the WHATWG.

Backwards compatible means that old sites continue to work in new browsers that implement the new spec. Since <frameset> continues to work in new browsers that implement the spec, it's backward compatible. That it's not conforming in HTML5 is not relevant for whether it's backwards compatible.