We are looking into replacing textbooks with an ereader (kindle, HP Slate or iPad). In its current incarnation, it doesn't appear that the iPad allows annotations of etexts. That …

Many documents are distributed as PDFs, such as papers to review, assignments to correct, or course material. Being able to annotate these documents during lectures (for students) …

We're interested in using a stylus with the iPad, for projecting screens and "writing" on them, then saving both the original images and the written information.

(If) When the iPad debuts in classrooms, how IMPORTANT it be that it sport native ability to freely highlight, quote and persistently annotate onscreen material? (native=system-wid …