Andrew Cox and Hebed Mohammed, “E-Books,” http://www.freepint.co.uk/issues/010201.htm#feature.
Electronic or virtual textbooks are portable, take little space for multiple volumes and give instant accessibility and enhanced search ability. They can be linked to relevant resources and annotations can be extracted precisely and efficiently. This format could break down barriers for some readers accustomed to computer screen format. Environmental savings are from reduced use of paper, ink, materials, and cost savings are additional benefits. E-textbooks may make it easier for authors to self-publish, enlarging the offerings available.