TidBITS#414/26-Jan-98 - Thinking about upgrading to Mac OS 8.1? Geoff Duncan offers two helpful articles this week for making the leap. The first discusses most of the feature enhancements in Mac OS 8.1, and the second focuses squarely on Macintosh Extended Format, the improved disk format previously known as HFS Plus. In other news, Netscape has made Navigator available for free and, in a blow to overseas users, Eudora Pro 4.0 for the Mac won't be available internationally.