Types of References (1 to 4)
Authoritative reference (AR): A concept in this International Standard normatively references a concept from another specification under the following additional conditions:
- The definition from the authoritative specification is copied verbatim into this (referencing) International Standard.
- An agreement is established between the owners of the two specifications to insure that the owner of the specification whose concept is authoritatively referenced will not change that concept without the agreement of the owner of this (referencing) International Standard.
Normative reference (NR): A concept in this International Standard normatively references a concept from another specification with no additional conditions.
Qualified reference (QR): A concept� in this International Standard normatively references a concept from another specification under the following additional conditions.
- The concept is defined differently in the this (referencing) International Standard.
- The relationship between the two concepts is specified in this (referencing) International Standard.
Informative reference (IR): A concept from this International Standard is related to or derived from a concept from another specification but the relationship is not stated.