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The article introduces the September 2000 issue of the journal, IEEE Transactions on Software Engineering. The importance of exception handling is well-recognized by system designers and software engineers. Exception handling is very often the most important part of the system because it deals with abnormal situations. This special issue of the journal concentrates on exception handling. Out of 39 submissions of paper on exception handling 9 articles were selected for publication in this journal. These papers represent the important research directions and issues in exception handling in a broad range of disciplines, such as operating system, programming languages, workflow systems and spreadsheet programs. This special issue is published in two parts. The first part includes papers which focus on traditional issues which focus on traditional issues related to programming languages, program design testing and empirical studies.

The article presents guest editorial, published in the May 2000 issue of the periodical "IEEE Transactions on Software Engineering," vol. 26, no. 5. The Fifth International Conference on Software Reuse that was held in Victoria B.C., Canada, included papers, mini-workshops, panels, and tutorials dedicated to various aspects of the software reuse enterprise, software architecture, and reuse over the Internet. Out of the 31 papers that were presented, a select few were nominated by the program committee as representing special, innovative contributions. In addition to that the article presents information on the two papers related to major technological approaches to software reuse. The first paper, considers the problem of selecting the best realizations and algorithms for a general purpose data structure. The second paper, is concerned with the problem of adapting class libraries for specific requirements.