Assigns custom properties to the drawing.
Summary
For example, you could create a custom property called Project and assign the actual project name as the value. To assign the same custom properties to a group of drawings, create the custom properties in a drawing template file.
Custom properties are displayed in the list of field names in the Field dialog box. You also have access to the properties data using programming interfaces, such as AutoLISP®. (Not available in AutoCAD LT.)