#define SOS_LABEL -4 /* Start of Session */
#define EOS_LABEL -5 /* End of Session */
#define EOT_LABEL -6 /* End of physical tape (2 eofs) */
+#define SOB_LABEL -7 /* Start of object -- file/directory */
+#define EOB_LABEL -8 /* End of object (after all streams) */
/*
* Volume Label Record. This is the in-memory definition. The