this document, the term <concept>entity</concept> indicates all of
header fields and body.
<p>
-The definition of RFC 2045 indicates that a MIME message is a tree.
-An message is a tree, each node is an entity, like following figure.
-Namely MIME extends message to tree structure.
+The definition of RFC 2045 indicates that a MIME message is a tree,
+and each node of the tree is an entity. Namely MIME extends message
+to tree structure.
<p>
FLIM uses <concept>mime-entity</concept> structure to represent
information of entity. In this document, it is called simply
field \e$B0J30$NA4$F$N\e(B header \e$B$H\e(B body \e$B$r;X$98l$H$7$F\e(B
<concept>entity</concept>\e$B$rMQ$$$k$3$H$K$7$^$9!#\e(B
<p>
-RFC 2045 \e$B$NDj5A$O!"\e(BMIME message \e$B$,\e(B entity \e$B$rC10L$H$9$kLZ9=B$$G$"$k$3$H$r\e(B
-\e$B<($7$F$$$^$9!#\e(Bmessage \e$B$O2<?^$G<($9$h$&$JLZ$H$J$j!"\e(Bentity \e$B$O$3$NLZ$K$*$1\e(B
-\e$B$k@a$H$J$j$^$9!#$D$^$j!"\e(BMIME \e$B$O\e(B message \e$B$rLZ9=B$$K3HD%$7$?Lu$G$9!#\e(B
+RFC 2045 \e$B$NDj5A$O!"\e(BMIME message \e$B$,\e(B entity \e$B$r@a$H$9$kLZ9=B$$G$"$k$3$H$r\e(B
+\e$B<($7$F$$$^$9!#$D$^$j!"\e(BMIME \e$B$O\e(B message \e$B$rLZ9=B$$K3HD%$7$?Lu$G$9!#\e(B
<p>
FLIM \e$B$O\e(B entity \e$B$N>pJs$rI=8=$9$k$?$a$K\e(B<concept>mime-entity</concept> \e$B9=\e(B
\e$BB$BN$rMQ$$$^$9!#0J2<$G$OC1$K\e(B mime-entity \e$B$H8F$V$3$H$K$7$^$9!#\e(B