According to ISO 10241-1, if a terminological entry, language section, term, definition, non-verbal representation (such as a symbol) or example has been taken from another standard, or another authoritative source, the source should be indicated. Enter the name of the source document in the tbx:source element. If the text taken from the source was modified in any way, this should be indicated in an accompanying note. The data or data category to which the source applies may be also be indicated in a note, for instance, to specify that the source applies to an example or to the definition.