Mircea Bina enhanced the oxygenxml/userguide repository by developing comprehensive documentation for Content Security Policy and Trusted Code integration, focusing on secure plugin development and onboarding. He clarified how plugins can implement CSP through extension points or headers, detailed security options, and provided recommendations for application authentication. Using DITA, Java, and XML, Mircea expanded guidance on trusted code, specifying its applicability to iframe targets and elaborating on the security implications of various embedded content types. His work improved documentation consistency and traceability, reducing misconfiguration risks and supporting safer integration patterns for developers working with CSP and trusted code concepts.