Complex sentence: This practice is not obligatory but may be observed if the episcopal conference decides; crosses remain covered until the end of the Good Friday celebration of the Lord's Passion, images remain covered until the beginning of the Easter Vigil.
Split into simpler sentences: This practice is not obligatory but may be observed if the episcopal conference decides. Crosses remain covered until the end of the Good Friday celebration of the Lord's Passion; images remain covered until the beginning of the Easter Vigil.