This CD-ROM, designed for use within Windows 95 or 98 on a PC, endeavours to form the basis of revision notes for the A level Biology course. It is not intended as a substitute in any way for initial study or reference. The material reviews all the major topics required within A level biology, and organises it into many individual on-screen pages, summarised for ready recall. Many of these pages are colourfully illustrated to provide extra clarity, and all are printable. Though there is no real interaction, these notes and diagrams are well presented and can be of significant help in revision-for example by identifying key topics for deeper revision. Aside from rather slow opening and closing at the beginning of a session (showing production credits), there has been considerable effort to keep the material compact, fast and easy to access as well as clear, enjoyable and eye-catching in its design. Several questions, selected from past A level examinations, along with full answers (and scoring details) are included so that the student can gauge revision progress. Screens, which include some well-designed "cribs" (short, useful summaries presented in a visually easy to remember format) can usually be printed. This will prove to be a useful tool as part of a purposeful revision programme, but nobody should allow themselves to think that it can replace diligence and intelligent planning. No part of the information on the CD is installed on the PC's hard disk. [+]