Documenting Complex Software Complexes . The electronic supplement to the manual "Software Engineering of Complex Zacks" is a unique resource that will become an indispensable assistant for students, graduate students and practitioners in the field of software engineering. This work, created by a team of authors, immerses the reader in the world of documentation, which is an integral part of the development of complex software systems. In today’s world, software is becoming increasingly complex and multi-faceted. Effective documentation of such systems is not just a formality, but an important aspect that can significantly affect the success of the project. The book offers the reader an in-depth understanding of the principles and methods of documentation, as well as practical recommendations for creating high-quality documentation that will serve as a reliable guide for both developers and end users. This work will be especially interesting for those who are studying or already working in the field of information technology, programming and system analysis. Students of technical universities, graduate students, as well as specialists involved in the development and support of software complexes, will find in the book many useful ideas and practical tips. The book will also be useful to project managers and technical writers who seek to improve the quality of their documentation and make it more accessible to users. The topics raised in the book cover a wide range of issues related to documentation. The authors consider not only traditional approaches, but also modern trends, such as the use of Agile-methodologies and Dev.. Ops-practitioner. They emphasize the importance of interaction between development teams and users, which makes documentation not just a set of instructions, but a living tool that contributes to better communication and increased efficiency. The style of the authors is distinguished by clarity and accessibility, which allows even complex technical aspects to be presented in an understandable and fascinating form. Each chapter of the book is filled with examples from real practice, which helps the reader to better absorb the material and apply it in practice. In addition, an electronic supplement to the tutorial provides additional resources, such as documentation templates, examples, and useful links, which makes learning the topic even more interactive and fun. If you are looking for literature that will help you understand the intricacies of documenting complex software systems, then this publication will become your reliable companion. The book "Documentation of complex software systems" will not only enrich your knowledge, but also inspire new ideas and approaches in your professional activities. Do not miss the opportunity to immerse yourself in the world of high-quality documentation, which will be the key to the success of your projects. Read, learn, and put your knowledge into practice and you’ll see your work become more organized and effective.