I understand that a variety of
beamer commands can help with displaying parts of a page on consecutive slides (such as
\only, etc.) so I can manage the effect that I want manually. but I am wondering whether it can be automated: is there a way to redefine
\pause so that everything before the pause will automatically fade (to gray) to highlight the new segment only?
PS: Till Tantau must be a genius! TikZ and Beamer are each incredible pieces of work.