More on the catechumenate in this section:
In mission lands it is found that some of the peoples already make use of initiation rites. Elements from these, when capable of being adapted to Christian ritual, may be admitted along with those already found in Christian tradition, according to the norm laid down in Art. 37-40, of this Constitution.
Any readers with experience in this regard, namely, the use of local or cultural rituals adapted for Christian initiation?
Catholic Sensibility 
I was thinking about countries (maybe missions in Africa) where Baptism of immersion literally means to “wade in the water”.