You can change the width of the table of contents frame and the text frame by dragging the dividing line between the frames to the right or left or by clicking the tool or the tool in the table of contents controls frame. To return the frames to their default sizes, click the browser window's reload or refresh button.

In addition, you can use the and tools in the table of contents control frame to vary the level of detail displayed in the table of contents frame (see “Expanding or collapsing the table of contents,” Section 3.1.1.)