S5: Standards Based Slide Shows
by Kevin Dangoor
Take that, PowerPoint 
S5: A Simple Standards-Based Slide Show System. (Nevermind the fact that Tufte says, rightly, that low content density presentations are not very useful)
Take that, PowerPoint S5: A Simple Standards-Based Slide Show System. (Nevermind the fact that Tufte says, rightly, that low content density presentations are not very useful)