Yayusi S2 User Manual -

I need to make sure the manual is organized logically, starting with basics and moving to advanced features. Including diagrams or screenshots would help, but since I can't add images, I'll note where they should be. Also, consider the user's level: if it's for end-users, the language should be simple and clear. If it's for technical users, more jargon might be acceptable. The user didn't specify, so I'll aim for a balance.