tar cvf ProsperGraphicsDemo.tar README PPRHeilHazel.sty prosper.cls Stream.avi pictures/* ProsperGraphicsDemo.tex
gzip  ProsperGraphicsDemo.tar
tar cvf ProsperTeachingDemo.tar README PPRHeilHazel.sty prosper.cls ProsperTeachingDemo.tex
gzip ProsperTeachingDemo.tar