i'm preparing a lecture in which i do some derivations on-screen,
and i'm using animation to have each line appear as i press "enter".

the slides are to be printed and handed out to the students.

how do i tag the animated elements so that they appear on-screen,
but do *not* appear on the printed copies?

the only way i have found to do this is to "animate" an opaque
white box over each element i wish to suppress, and make the
box be the "last" thing to appear on the slide.  but this is a huge
pain.

isn't there an easier way?  microsoft:  how about adding a
"suppress this element from printing" checkbox to the format
dialog?

thanks,

seth teller