To update an outline entry, select that option from the right side options menu. This will open a pop-up window where you can make your changes (either to the entry text or its placement in the outline). When you are finished, click the "Update Entry" button.
To delete an entry, select that option from the right side options menu. This opens a pop-up window that asks the question "Are you sure you want to delete this entry?" and if the answer is yes, click the "Delete" button.
To change the placement of a line, use the four arrows to the right of the entry. The first arrow will move an entry up a line, the second arrow will move the entry down one line, the third arrow will decrease the indent of the entry, and the fourth and final arrow will increase the indent of the entry. To use the arrows, simply click on them and the entry will be moved accordingly.