As you drill down towards the finding aids, the display moves from the right frame at one level to the left frame at the next, and vice versa as you ascend the hierarchy. As noted above, this arrangement also often makes it possible to move somewhat laterally as well as up and down. The other icon buttons operate on the finding-aid level only, and are discussed in the next section. Enter that collection and click on the link to the Atherton Papers . The right frame will display the currently-selected section of the finding aid itself.
Some sections have subsections.
Click on the right-pointing blue arrowheads to reveal subcontents. Selecting those headings will take you directly to those subsections. As you scroll down in the right frame, then, and away from its heading, the left-frame highlighting keeps you aware of your current location at all times. And there you have the main OAC navigation and display features. Depart unexpectedly from your itinerary.