-
-Messages that are packed by \fIpackf\fR can be unpacked using
-\fIinc\fR.
-
-.Fi
-^$HOME/\&.mh\(ruprofile~^The user profile
-^\&.msgbox\&.map~^A binary index of the file
-.Pr
+.PP
+.B packf
+makes an mbox-style delimiter by examining the first line
+of the message. If the first line is a \*(lqReturn-Path\*(rq
+field, its address and the current date and time are used. Otherwise,
+if the first line has an \*(lqX-Envelope-From\*(rq field, its
+contents (which should already be in the correct format) are used.
+Otherwise, a dummy address and the current date and time are used.
+.PP
+Messages that are packed by
+.B packf
+can be unpacked using
+.BR inc .
+.SH FILES
+.fc ^ ~
+.nf
+.ta \w'%nmhetcdir%/ExtraBigFileName 'u
+^$HOME/.mh_profile~^The user profile
+^.msgbox.map~^A binary index of the file
+.fi
+.SH "PROFILE COMPONENTS"
+.fc ^ ~
+.nf
+.ta 2.4i
+.ta \w'ExtraBigProfileName 'u