Property Set Definitions
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Property Set Definitions (PSD) are used to define what kind of objects will associate with Entity Marks and assign the type and nature of data to be used with Entity Marks. Property Set Definitions are assigned in the Styles Manager palette.
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Auto Increment in manual property definitions (Auto Increment – Integer, Auto Increment – Character) are use to create sequential markers for object in your drawing. The increment value will depend upon the order of the objects creation, not the order in which you create the Entity Marks.