In the liturgical calendar, Lent IV is the fourth of six Sundays in the season of Lent.

The liturgical color changes from violet to rose (or "pink").  

Images are veiled, except for the crucifix above the altar.

As there is no rose tunicle for the acolyte, he should vest in cassock and surplice, but still perform the usual acolyte duties.

Simple flower arrangements (roses) may be placed on the reredos on this Sunday only.

The Proper of the mass is at DWM pg. 280.

The Gloria is omitted at all masses during Lent.

The appointed Tract is used at the Gospel acclamation.  The altar party remains (standing) in the chancel stalls until about halfway through the tract.

The celebrant, rather than the deacon, says the Prayers of the People, using Form 1 (See DWM 1048)

The Preface is the Preface of Lent (DWM pg. 588)

Alleluias are omitted.

Trisagion may be sung during the Communion of the Faithful, before the Communion Antiphon.