Hi,
> I find that .png format is way better for line drawings.
> Yes! Remarkably small file sizes and surprising clarity at the other end.
> I use that 90% of the time and it renders nicely on almost any PC.
png is a bitmap format, and never as good as a vector format if you have a vector grafic. The pitty is that word isn't able to handle vector graphics in a useful way :-( Even Powerpoint can't do this in a clean way.
Marte