[Koha-devel] problem with the main template in tools page

I have this problem in the template "tools-home.tmpl": the content of this template is inside of labels <!--TMPL_IF-->, for example: <!-- TMPL_IF NAME="CAN_user_tools_edit_news" --> <dt><a href="/cgi-bin/koha/tools/koha-news.pl">Noticias</a></dt> <dd>Escriba novedades para el OPAC y la interfaz administrativa</dd> <!-- /TMPL_IF --> but this content doesn't show, i don't find where the variables are declared (in this case "CAN_user_tools_edit_news"), if anyone can help me I'll be grateful