The part is a welded assembly or a sheet metal part
The document tested is a part. 
Perform the operation according to the type of part.
The test is selected from the list that specifies the type of part:
When a document contains one or more " List of Welded Parts " folders and/or one or more " Flat Pattern " features, it is considered a " welded or sheet metal part."
In the absence of such documentation, it is considered a " standard part."
Note1 :
- This feature supports only documents saved in SOLIDWORKS 2009 or later.
Note2 :
- This condition does not require the file to be opened to test the document. It will be used if the user wishes to include all parts with one or more “List of Welded Parts” folders and/or one or more “Unfolded View” features.