Terms of use

Effective date: October 26, 2026

These terms govern the use of LavaCS, provided by Novortechs Co., Ltd. (the “Operator”).

Using the textbooks

Published textbooks are free to read without registration and may be used for personal study. Before running code from a textbook, check the code and your execution environment yourself.

Copyright

Copyright in text, illustrations, structure, and other material created by LavaCS belongs to the Operator or the relevant rights holder. Except for quotations and personal use permitted by law, please contact the Operator in advance to reproduce entire textbooks, redistribute them, or sell them. External materials and software are subject to the conditions set by their respective rights holders.

Prohibited conduct

Do not interfere with the delivery of the site, attempt unauthorized access, place excessive load on the site, or infringe the rights of others.

Content and external links

We prepare the textbooks to support learning, but do not guarantee their accuracy or suitability for every environment or purpose. Technical specifications and implementations may change, so consult official documentation when developing software. Reference links are managed by the operators of their respective sites, and their availability or content may change.

Changes and interruptions

The Operator may revise textbooks, change the service, or interrupt its availability for maintenance and other purposes. Whether the Operator is liable, and the extent of any liability, is governed by applicable law.

Contact

Please contact us with questions about these terms or the use of the textbooks.

Operator: Novortechs Co., Ltd.