Mutatis mutandis: necessary textual adjustments preserve operative equivalence across legal instruments while altering only particulars where required. Mutatis mutandis denotes applying existing provisions while making only the necessary changes in particulars so that the substantive effect remains the same; it signals necessary changes in points of detail rather than wholesale modification and operates as a drafting and interpretation device directing textual adaptation and equivalence across instruments so that only particulars are updated while the primary legal intent and function endure.