Name prefixes are the "Mr.", "Mrs.", "Dr." and other honorifics which appear before a person's name when printed. VSys gives you a specific field for this in the Profile editor, and allows you to use one of the designated prefixes or enter a new one on-the-spot as needed. Pre-defining the items in the menu will help keep the styles consistent.
Open the Name prefixes setup tool from the Setup panel, under by clicking on Name prefixes. Use the Add name prefix link to add a new prefix. Include in the Description any punctuation that should print with this prefix. Right-click on an existing item to edit or delete it.