/usr/share/cups/templates/cs/option-trailer.tmpl is in cups-server-common 1.7.2-0ubuntu1.11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<P ALIGN="CENTER"><INPUT TYPE="SUBMIT" VALUE="Nastavit parametry"></P>
</DIV>
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