Select a link to the left to work with Dr. Baer on the requested material !
To see the important material more clearly, narrow the table of contents (TOC). To do this, move the mouse over the vertical bar at the right edge of the TOC until the cursor turns into a 2-headed arrow. Click and hold the left mouse button and drag left. The table of contents narrows.
If you are in Windows-based Internet Explorer, hit F-11 to toggle the menus out of the way. Hitting F-11 a second time will restore your menus.