"Unrestricted (Open)" refers to a type of access that allows individuals to freely use, modify, and distribute content or resources without any limitations. This concept is often applied in various fields, including software development, education, and research, promoting collaboration and innovation. In the context of software, for example, open-source programs are considered unrestricted because users can view and alter the source code. Similarly, open-access publications enable researchers to share their findings without paywalls, making knowledge more accessible to everyone.