The Electronic Green Book is located here. There are several subdirectories, but the important ones are by_name and by_number. These directories contain the chapters and appendicies of the Green Book, listed by number (chap7) and by name (rtos). So, for example, the file BY_NAME/rtos is identical to BY_NUMBER/chap7. Which directory you use just depends on how you want to search the Green Book. Some files are listed by name in both places, like the Contents, Figures list, and the Glossary. Contents is also in the parent directory, as you saw above. Suppose you want to know the possible CSD information for the audio device. You might do the following: $ chd /cd/GRNBK $ grep 'Device Status' Contents A VII.2.4.2 Device Status Descriptors A VII.2.6 Device Status Descriptors $ grep 'A VII.2.4.2' Contents ! grep audio (no luck.) $ grep 'A VII.2.6' Contents ! grep audio A VII.2.6.2.2 Audio Processor A VII.2.6.3.2 Audio Set $ chd BY_NUMBER (OK, we know it's in Appendix 7, sect. 2.6.2.2) $ umacs app7... ...in the editor, search for "2.6.2.2" or "Audio Processor"... ... 2.6.2.2 Audio Processor Device Type Code 2 Device Parameters Parameter string Description Default AM Audio Mixing Unit presentnone present AD#nAudio Processing delay in ms = n 27 ... For those of you with an abiding curiosity, you will have noticed another directory: CHANGE_LISTS. CHANGE_LISTS is the electronic form of the change lists that get distributed with each set of change pages. As far as I have been able to determine, this version of the green book is currently (2 May 1990) up to date with the current Green Book revision, issued November 1989. If anyone finds any differences with the Green Book, PLEASE LET ME KNOW. My thanks to Chuck and Kris, who performed the conversion from WordPerfect format. Jennine Townsend