From The Document Foundation Wiki
- Wherever possible, use the default options of a clean LibreOffice installation and avoid user interface customization, if you plan to take screenshots of dialogs, toolbars and menus.
- Use the en-US locale that you set in ▸ ▸ ▸ ▸ box. It will enable the English USA spelling and grammar checking. Check if these tools are available in your installation.
- The setting for one General option ▸ ▸ ▸ ▸ is important for consistency when reviewing user guides and capturing some screens. Because the layout and appearance of default Open and Save dialogs vary with the user’s operating system, but the LibreOffice dialogs are the same regardless of the operating system, our guides use the LibreOffice dialogs in illustrations.