Chapter, Paragraph

 1   2,   9   |     and classes of saints, for optional use, whenever the psalm
 2   2,   9   |              40. Sequences are optional, except on Easter Sunday
 3   4,  31   |     235. The use of incense is optional in any form of Mass:~a.
 4   7,  34   |                        316. On optional memorials:~a. On the weekdays
 5   7,  34   |   weekday Mass, the Mass of an optional memorial, the Mass of a
 6   7,  34   |   faithful are attached to the optional memorials of Mary or the
 7   8,  38   | Ordinary Time when there is an optional memorial or the office is
 8   8,  38   | Ordinary Time when there is an optional memorial or the office is
 9 Appen1     | Catholic Bishops to permit the optional practice of Communion in
10 Appen1     |      its catechesis about this optional practice, drew attention
11 Appen2     |   saint is to be considered as optional. But it should not be omitted
12 Appen2     |        is of the weekday or an optional memorial occurs. 5. Masses
13 Appen2     |      Ordinary Time and when an optional memorial occurs, as in no.
14 Appen2     |   weekday Mass, the Mass of an optional memorial, the Mass of a