This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
Mathematica Front End Token

"PreferencesDialog"

This token has not been fully integrated into the long-term Mathematica system, and is subject to change.
"PreferencesDialog"
is a front end token that opens the Preferences dialog to view and edit preferences, options, and system settings.