\documentclass[biblatex]{deltares_memo}

\begin{document}
\memoTo{to whom it may concern}
\memoConfidentialUntil{}
\memoDate{\today~\currenttime}
\memoVersion{001}
\memoFrom{Jan Mooiman}
\memoTelephone{+31\,(0)6\,4691\,4571}
\memoEmail{jan.mooiman@deltares.nl}
\memoSubject{---}
\memoCopy{}

\deltarestitle
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% Text body

%------------------------------------------------------------------------------
\end{document}
