The purpose of this guide is to give you an overview-level understanding of the differences between SunOS release 4.x and SunOS release 5.6 operating environments to make your transition to the Solaris 2.6 operating environment a smooth one. As a result, Solaris 1.x to Solaris 2.x Transition Guide covers a wide range of topics. Because it is not practical to list detailed procedures for tasks here, you will find references throughout this guide to publications in the Solaris 2.6 documentation set where detailed information is available.