#define MS_DEFAULT 0 /* default (one msg per file) */
#define MS_UNKNOWN 1 /* type not known yet */
#define MS_MBOX 2 /* Unix-style "from" lines */
-#define MS_MMDF 3 /* string mmdlm1 */
+#define MS_MMDF 3 /* string MMDF_DELIM */
#define NOUSE 0 /* draft being re-used */