<g:if test="${session.role == 'admin'}"> <%-- show administrative functions --%> </g:if> <g:else> <%-- show basic functions --%> </g:else>
<g:each in="${[1,2,3]}" var="num"> <p>Number ${num}</p> </g:each><g:set var="num" value="${1}" /> <g:while test="${num < 5 }"> <p>Number ${num++}</p> </g:while>