adj. Of, pertaining to, or in the nature of a rubric
The Century Dictionary and Cyclopedia
Same as rubric, 1.
Of, pertaining to, or contained in a rubric or rubrics: as, a rubrical direction.
Word Usage
"Before the many rubrical uncertainties and excessive options within the new Missal, having the form of the older Mass before us can make an enormous contribution to Catholic liturgical life, serving as a standard to which the ordinary form liturgy can aspire."