Setting bookmarks. Use the bookmarks options to define bookmark levels, create bookmarks from paragraph tags, and set up article threading. 1. In the PDF Setup dialog box, choose Bookmarks from the pop-up menu, or click the Bookmarks tab (Windows/UNIX). 2. Select Generate PDF Bookmarks.
Horizontal Pendular Nystagmus. 1  Lesions of the central tegmental tract (such as due to MS) 2  Spasmus Nutans (can also be vertical, torsional) 3  Nystagmus of the blind.  Congenital nystagmus.
Answer: Nystagmus refers to uncontrolled eye movements. Nystagmus usually involves quick, jittery movements made by both eyes, both horizontally and vertically. Some people do not realize that they have nystagmus because their eye movements are not apparent to them and their vision is normal.