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.
The presence of nystagmus in a patient usually indicates some problem with the labyrinth, vestibular nerve, or vestibular nuclei, but it also occurs as a part of the cerebellar dysfunction following over-consumption of alcohol. Nystagmus also results from certain viral infections involving the vestibular system.