Here is the first book on a general-purpose programming library which can be ported to multiple platforms with little effort. Portability is a serious challenge for C++. YACL is an application-centered class library toolkit of GUI and general purpose classes that makes portability a natural spin-off while providing high-level abstractions. Applications coded to use YACL's classes will run on any of the supported platforms with merely a recompilation. Highlights *Provides a set of classes that presents a single high-level programming interface *Describes how to operate YACL class library on five different platforms *Renders complete platform independence of public class interfaces *Maximizes reusability of the classesSource Code The current version of YACL code is available for anonymous ftp from ftp://ftp.aw.com/cseng/authors/sridhar/yacl. Also, a free disk is available; further details are noted inside the book. 0201832763B04062001.