-\e$B$3$3$G!"\e(Bentity \e$B$,$I$&$$$&<oN`$NI=8=$r9T$C$F$$$k$+$r<($9$N$,\e(B
-@strong{representation-type} \e$B$G!"\e(Bentity \e$B$r@8@.$9$k;~$K$O$3$l$r;XDj$7$^$9!#\e(B
-(cf. @ref{Entity Creation}) @refill
+Each entity has @strong{representation-type}. It must be specified when
+an entity is created. (cf. @ref{Entity Creation}) @refill