It is possible to set up rules that ControlDraw uses to automatically populate instance data.
This can be done in two primary ways, Symbol Data values and Special Defaults
Special Defaults are entries that are made into the Default value when defining the fields in the Data Designer
!Left PTag # Use the left #letters of the Symbol Tagname
!Left UserText # Use the left #letters of the Symbol User Text
!Caption Use the Symbol Caption
!AltCaption Use the Symbol AltCaption
!Inherit Obtain the value from the same named field in the parent instance
!Script Calculate a tag using a tagging script. This can use complex rules to work out a string value to enter
This shows how it all works
!Inherit allows you to set a field in an instance and have the value cascade down into the same named fields in any child objects. To do this use '!Inherit' as the default value for the field for the lower level object.