To the left of the scroll bar which is itself to the left of the document, there are one or two panels visible to the user. You may have noticed that the scroll bar ``thumb'' varies in size. It indicates the percentage of the document that is being viewed. Figure 25 shows a document that is almost half visible in the window. In contrast, Figure 14 shows less than a third of the document. In Figure 25, where you are viewing about 50% of the document, you can see --- lines in the mural area that represent the links that are present in the document. You will also notice that the links visible on the screen are roughly in the position relative to the screen of the lines in the mural relative to the scroll bar thumb. To find other links in the document simply move the thumb to a location opposite the position you wished to view.
In addition to the links landmark tool -- called a mural, there is another landmark tool called a tilebar. The tile bar is activated by pressing the checkbox on the options menu on the lower left corner of the screen. This will popup a dialog box that will show where specified terms occur in the document. Its operating principle is the same as that for landmarks.