1. Select any section.
2. Choose "All Delete"(E) from the "Edit"(Alt + E) menu.
3. When the "Check" message is displayed, press the "OK" button or press "Enter" key.
4. All the sections are deleted. Note that if this options is used all of the section headings and the phrases in the project will be deleted. Before you select "OK" ensure that this is what you actually intend to do.