Liturgy is a constitutive element of the holy and living Tradition. (#1124) from here: <a href="http://www.scborromeo.org/ccc/p2s1c1a2.htm#IIIIt">http://www.scborromeo.org/ccc/p2s1c1a2.htm#IIIIt</a> is the law of *prayer*, but prayer consists of more than *only* the Mass.