Main enhancement is the support for Nastran include files. When a Nastran file is read, with multiple includes, a unique file number is allocated to all entities contained in the include file. From the file menu you can export an include file by specifying the file number and file name. The file number can also be changed for entities from menu item "Tools->Mesh Management->Set Include File No" so the include file can be modified.
A display group of the include file can be created with menu item "Group->Group From Include File "and specifying the File No.