Ansys has made its help documentation publicly available, and this include Zemax OpticStudio help. It is open to anyone with internet access and has a search functionality. You can access the help file in the following link: Ansys Help
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That link takes me to the PDF. However, the “truly” online help button has disappeared in the 2025/R2 version. Does anyone know how to get it back?
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To Chinese users:
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。