grids-as-flow

BTW, I don't know if I've mentioned this before, but a major goal for
me is to have layout time be proportional to the number of boxes, not
the number of columns.  In other words, this should render really fast:

  <box cols="9999">
      <box colspan="9990"/>
      <box colspan="9"/>
  </box>

Why?  Because this way you can get the core to do text reflow for you
(and do it fast too) by always making sure that colspan==minwidth.  I
might even add a flag for that.  Just do that and you get "free" text
reflow.

  - a

-- 
"It's lucky," he added, after a pause, "that there are such a lot of
islands in the world.  I almost envy you, Mr. Watson."

                                                   -- Mustapha Mond