The preferences object provides access to settings within the Multiframe application that control how data is presented.  This includes the sign conventions used to display forces and numerous methods for manipulating and accessing the units of measure.  An important method of the Preferences object is the GetUnit function that returns a string containing the units name (e.g. mm, kN, ft) of a specified unit type.  This is very useful when presenting data or requesting input from a user as the units of measure can easily be displayed. Note that all methods and properties in Multiframe automation use the current units.