Trying to learn how to translate from the human translation examples.
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> (par exemple, abc??123??).>>.
"(b) if the means of identification of type contains characters not relevant to describe the component or separate technical unit types covered in this information document, such characters shall be represented in the documentation by the symbol "? " (e.g. abc??123??). "
si les moyens d'identification du type contiennent des caractères n'intéressant pas la description des types de véhicules, de composants ou d'entités techniques couverts par la présente fiche de renseignements, il importe de les indiquer dans la documentation au moyen du symbole: «?» (par exemple: abc??123??).
if the means of identification of type contains characters not relevant to describe the vehicle, component or separate technical unit types covered by this information document, such characters shall be represented in the documentation by the symbol "?" (e.g. abc??123??).