+ * A unique value representing the story in the local library (usually a
+ * numerical value 0-padded with a minimum size of 3; but this is subject to
+ * change and you can also obviously have more than 1000 stories --
+ * <strong>a luid may potentially be anything else, including non-numeric
+ * characters</strong>).
+ * <p>
+ * A NULL or empty luid represents an incomplete, corrupted or fake
+ * {@link Story}.