Textuality - Big Letters

Design Goal: Ease of Use

HTML The metaphor is powerful, it works with their screen and they already use it every day.
PDF Itís hard to read, hard to move around in, and they miss the hypertext. At least the document looks familiar.
SGML The interface is new, but easy, and it works with the screen. Needs to be more like a real browser.
Knowledge is a text-based application.