1. Show Outline Toolbar Open View-Toolbar-Outline. At this point, there will be an extra line at the bottom of the toolbar. Note that all the buttons to generate the directory are in it! In addition, right-click the blank area of the toolbar and find "Outline" to open it.

2. Set the content level of each chapter. For example, set the level of "Chapter 1 Electronic Components and Their Selection" to "1": hold down the mouse on the line where the first chapter is located, click "Text" in the outline toolbar, and see that there are 1 to 9 levels, and select "1". Next, follow the same steps to set the directory level of each chapter.

3. Generate Directory Move the cursor to the location where you want to place the directory, such as the first character of the first page of a book, open Insert-Reference-Directory in the main menu in turn, and click OK in the pop-up directory menu.