[book]
 title=A book of chapters
 author=Me, Myself and Irene

 [book::chapter1]
 title=The First Chapter, ever to be written
 file=book/chapter1.txt

 [book::chapter2]
 title=The Next Chapter, after the First Chapter, ever
 file=book/chapter2.txt
 # btw, you can use unix style comments, too...
 ;end of ini