[SOURCE: ISO TS 80004-4:2011, 2.5, modified – In the definition "similar" has been omitted since it is superflous, and "external" has been added after "the third". The note has been omitted.]
[SOURCE: ISO TS 80004-4:2011, 2.5, modifié – Dans la définition, "similaires" a été supprimé. La note a été omise.]