.I annotations
in messages.
Header fields consist of a field name and an optional field body
-as defined by RFC-2822.
+as defined by RFC 2822.
The
.B -component
option specifies the field name, and the
last path name component of the field body must match.
If the
.B -number
-option is used in conjuction with the
+option is used in conjunction with the
.B -delete
option, header field
.I num