Wwhen I want to copy a section of text there is no - button to minimise page
Dear Sandy, thanks for your question. Could you please add some more information to your question. What do you mean by “button to minimise page”?
Window management is not a feature of LO but rather the underlying operating system (Windows, MacOS, GNU/Linux, etc.). Where the minimise button is and what it looks like varies according to operating system and the particular window manager / theme being used but it is usually in the title bar at the top.