-\e$B$^$?!"9T57$N0-$$$3$H$@$H8@$($^$9$,!"\e(Bencoded-word \e$B$rMQ$$$:$KHs\e(B ASCII
-(@ref{ASCII}) \e$BJ8;z$r\e(B header \e$B$KF~$l$?5-;v$bB8:_$7$^$9!#\e(B@refill
+The encoded-word is the only valid format to represent non-ASCII
+(@ref{ASCII}) characters in a header, but there are also invalid styles.
+Such kinds of evil messages represent non-ASCII (@ref{ASCII}) characters
+in headers without encoded-words (it is called "raw" non-ASCII
+(@ref{ASCII}) characters).@refill