Enterprise Administration > Windchill Export and Import > Windchill PLM Connector - Creo Packages > Windchill PLM Connector – Creo Packages > Importing Packages > Before Importing a Package > Setting Import Preferences > Baseline Folder > Using Prefixes
  
Using Prefixes
The prefixes used in the wpc_preferences.txt file are the following:
%o—Indicates what operation (import or export) is being performed.
%u—The username for Creo Packages.