Internet is becoming more and more widely used for the design and delivery of course material. This relatively new technology makes extensive use of cybertexts, taken here in the generic sense of digitized texts, images and sounds. In designing web sites for their courses, professors can now rely on new tools which benefit and facilitate their work. Our presentation addresses issues related to these functions and particularly to the design and use of e-texts (e-packs) with the leading platform WebCT (Web Course Tools). Data used in our presentation are extracted from a Canadian survey and from our own experience with undergraduate courses.