+ th:replace="~{/templates/layout.html :: layout(
+ uri='/potemkin/html-experimente/fast-leer-mit-menü-und-marginalinhalt.html',
+ title=~{:: title},
+ maincontent=~{:: .maincontent},
+ marginalcontent=~{:: .marginalcontent}, json='MERGE:/potemkin.json')}"