[pdftex] early availability of pdf output?

[ivo welch]

I know that pdftex cannot create linearized output, but would there be 
any way to get pdftex to flush its output in a digestible form to an 
acrobat reader, even if it is somewhat fudged?  I am using pdflatex to 
create my book, and am in the book organizing stage, with some sections 
written, others not.  so, I have around 400 pages.  I move around some 
sections, and then want to read over the toc .  alas, to get the current 
toc, I need to pdflatex twice, but it would be nicer if during the 
second run, I could take a look at the first 30 pages while pdflatex is 
working on pages 60-400.  I know the answer is probably "no," but I hope 
this is worth asking.  thanks for any comments.  /iaw