There are no little things... in the liturgy in particular.
From Catholicculture.org
In an August 8 letter to the bishops of the US hierarchy, relaying the Vatican directive, Bishop Arthur Serratelli-- the chairman of the US bishops' liturgy committee-- welcomed the instruction, saying that it "helps to emphasize the theological accuracy of our language and appropriate reverence for the name of God."what is this referring to? Ah, yes:
Vatican directive: "Yahweh" inappropriate for liturgical use
Aug. 13, 2008 (CWNews.com) - The Vatican has ruled that the Name of God, commonly rendered as "Yahweh," should not be pronounced in the Catholic liturgy.
The Vatican directive will not require any changes in the language of liturgy, since the Name of God is not spelled out in any authorized translation of the Roman Missal. However some hymns may be deemed inappropriate for liturgical use.
[...]
The effect of the Vatican directive should be evident in the selection of hymns, since some contemporary liturgical music violates the policy by pronouncing the Name of God. The policy will also call for some care in the preparation of variable elements in the liturgy, such as the Prayers of the Faithful.