Target, or opening a new instance of UA with a link

I have noticed that the target attribute for <a> is now out of
strict x/html. That means that there is no way to force a UA to
open a link in a new instance of itself if you're keeping to a
strict dtd.  Does anyone else miss this?

Further, does anyone know why the frameset dtd is based on the
transitional and not the strict dtd? At the back of my questions
is the assumption that the transitional (and therefore the
frameset) dtd will eventually be depreciated or even jettisoned.
What's so wrong with frames?

Thanks
Doug
*************************************
   Doug Morrison-Cleary
doug@m-c.lake.mn.us