To add a new line element, e.g. a single tree or distance marker:
- Select the Add Tool [n]
- Find the wanted element in the list (search with the Filter)
- Click the "Add"-button. Points are added as dots in the editor, and you can see which type they are by selecting them and looking in the top right corner of the editor
- Place the new element
This video shows how:
Remember to save your work.