-#define HNOP 0x0000 /* just used to keep .set around */
-#define HBAD 0x0001 /* bad header - don't let it through */
-#define HADR 0x0002 /* header has an address field */
-#define HSUB 0x0004 /* Subject: header */
-#define HTRY 0x0008 /* try to send to addrs on header */
-#define HBCC 0x0010 /* don't output this header, unless MTS_PIPE */
-#define HMNG 0x0020 /* munge this header */
-#define HNGR 0x0040 /* no groups allowed in this header */
-#define HFCC 0x0080 /* FCC: type header */
-#define HNIL 0x0100 /* okay for this header not to have addrs */
-#define HIGN 0x0200 /* ignore this header */
-#define HDCC 0x0400 /* another undocumented feature */
-#define HONE 0x0800 /* Only (zero or) one address allowed */
-#define HEFM 0x1000 /* Envelope-From: header */
+#define HNOP 0x0000 /* just used to keep .set around */
+#define HBAD 0x0001 /* bad header - don't let it through */
+#define HADR 0x0002 /* header has an address field */
+#define HSUB 0x0004 /* Subject: header */
+#define HTRY 0x0008 /* try to send to addrs on header */
+#define HBCC 0x0010 /* don't output this header, unless MTS_SENDMAIL_PIPE */
+#define HMNG 0x0020 /* munge this header */
+#define HNGR 0x0040 /* no groups allowed in this header */
+#define HFCC 0x0080 /* FCC: type header */
+#define HNIL 0x0100 /* okay for this header not to have addrs */
+#define HIGN 0x0200 /* ignore this header */
+#define HDCC 0x0400 /* another undocumented feature */
+#define HONE 0x0800 /* Only (zero or) one address allowed */
+#define HEFM 0x1000 /* Envelope-From: header */