Marker is always used for better expression and aesthetic. To avoid the misunderstanding of the marker, legend, a floating box within your map, is used to describe all of the map markers and their specific meanings.
- Click "View - Properties" on the menu to open the properties view
- Click any blank space on the mind map, and check the "Show Legend" check-box on the properties view
- Drag the mouse, and click any place on the mind map
- Double click the text on legend, and modify it directly
Notes: Once added to the mind map, the maker will appear on the legend automatically. Of course, it will disappear from the legend when removed from the mind map.