+ /* Specifies which part of the split WIM the resource is located in.
+ * This is on on-disk field.
+ *
+ * In stand-alone WIMs, this must be 1.
+ *
+ * In split WIMs, every split WIM part has its own lookup table, and in
+ * read_lookup_table() it's currently expected that the part number of
+ * each lookup table entry in a split WIM part's lookup table is the
+ * same as the part number of that split WIM part. So this makes this
+ * field redundant since we store a pointer to the corresponding
+ * WIMStruct in the lookup table entry anyway.
+ */