A.P. writes to say that the Chicago Manual of Style, 15th Edition, is now available on CD-ROM. This is in addition to the print edition (of course) and the online version, which is available to paying subscribers only.
I find Chicago’s index easier to use than I used to–and I don’t know if that’s because I’m a more experienced editor, or because the index itself has become more user-friendly and intuitive. But I still think it can be a trial to find the answers to certain questions. Having a fully searchable version of the manual certainly wouldn’t hurt.