68Lastly, Article 5(3)(c), second case, of Directive 2001/29 requires that the source, including the name of the author of the protected work, be indicated, unless this turns out to be impossible, and that the use in question be made ‘to the extent justified by the informatory purpose’ and, therefore, consistently with the principle of proportionality. It follows that the use of the protected work must not be extended beyond the confines of what is necessary to achieve the informatory purpose.
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