Deletes properties except for the specified one(s)
Operation possible on parts, assemblies or drawings. 
This operation removes all properties from the document being processed, except for a few.
Example: Delete all properties except the " Description " property.
You can use the "*" character before or after a specific string to check whether the document contains one or more properties that include that string.
Example:
Desc* deletes all properties except those beginning with Desc in the document.
*000 deletes all properties except those ending in 000 in the document.
You can also specify multiple properties—which should not be deleted—by separating them with the character ''; ''.
Example:
delete all properties except Descriptionand PartNo in the document.