Revised General Instruction of the Roman Missal
 
The rite of the Mass is defined by a document called the General Instruction of the
Roman Missal (GIRM). The latest revised version of the GIRM was
published by the Vatican (in Latin) in 2001, and translated into English
by the US Conference of Catholic Bishops in 2002. For more information
about the revised GIRM from the USCCB,
click here. The revised GIRM
describes several changes in the rite of mass, which are discussed
below.