Base SPIRIT identifier group. Identify a SPIRIT document by its by vendor, library and name. Name of the vendor who supplies this file. Name of the logical library this component belongs to. Note that a physical library may contain components from multiple logical libraries. Logical libraries are displayes in component browser. The name of the object. Must match the root name of the XML file and the directory name it or its version directory belongs to. This group of elements identifies a design and a PMD - with an optional version number -. This group of elements identifies a component of a bus definition - with a mandatory a version number-. Base SPIRIT document reference. Contains vendor, library, name and optional version attributes. Base SPIRIT document reference type. Contains vendor, library, name and optional version attributes. Resolved SPIRIT document reference type. Contains vendor, library, name and optional version attributes and the URI of the referenced SPIRIT document