bold = Main text
   Chapter, §                                grey = Comment text

 1 Int    |         the Church judges it her duty to help all men explore
 2 Int, 2 |         did not fail to do their duty in this area. Their noteworthy
 3   1, 13|     dwell among men, she has the duty "of scrutinizing the signs
 4   1, 22|      important and urgent social duty. ~
 5   1, 23|         the Church laid down the duty of the rich toward the poor
 6   1, 28| professional outlook, a sense of duty, and love of neighbor. Even
 7   2, 44|                         44. This duty concerns first and foremost
 8   2    |                       A National Duty~
 9   2, 48|                          48. The duty of promoting human solidarity
10   2, 48|           It is a very important duty of the advanced nations
11   2, 53|      arms race. It is Our solemn duty to speak out against them.
12   2, 65|    nations will be regarded as a duty by every nation. The developing
13   2, 67|    cannot insist too much on the duty of giving foreigners a hospitable
14   2, 67|    hospitable reception. It is a duty imposed by human solidarity
15   2, 74|          requirement of military duty can be fulfilled, in part
16   2, 81|       matter, the laity have the duty of using their own initiative