TODO
* $B4pK\E*$J5!G=$N<BAu(B
+ $BDj?t$N(B export
+ title, author, summary $B$N<hF@(B
* $B%I%-%e%a%s%H$N@0Hw(B
* test suites
+ test $BMQ(B index $B$N:n@.(B