This page lets you configure various privacy-related settings.
Opus normally records file names and paths for various actions you perform, mainly to provide you with historical ("most recently used" - MRU) lists in drop-down menus and suggestion popups.
The various functions listed here all keep a log of recently used names and paths. If you want to stop a particular function from saving history data, turn its checkbox off. You can also clear the data for individual functions by clicking the Clear history link that appears when you move the mouse over the list.
The buttons at the bottom let you disable and clear all history items at once.