<%-- div and mod are alternatives to / and % --%>

Arithmetic Operators		Relational Operators
Expression	Result	Expression	Result
\${3+2-1}	${3+2-1} <%-- Addition/Subtraction --%>	\${1<2}	${1<2} <%-- Numerical comparison --%>
\${"1"+2}	${"1"+2} <%-- String conversion --%>	\${"a"<"b"}	${"a"<"b"} <%-- Lexical comparison --%>
\${1 + 2*3 + 3/4}	${1 + 2*3 + 3/4} <%-- Mult/Div --%>	\${2/3 >= 3/2}	${2/3 >= 3/2} <%-- >= --%>
\${3%2}	${3%2} <%-- Modulo --%>	\${3/4 == 0.75}	${3/4 == 0.75} <%-- Numeric = --%>
\${(8 div 2) mod 3}	${(8 div 2) mod 3} <%-- Compares with "equals" but returns false for null --%>	\${null == "test"}	${null == "test"}
Logical Operators		empty Operator
Expression	Result	Expression	Result
\${(1<2) && (4<3)}	${(1<2) && (4<3)} <%--AND--%>	\${empty ""}	${empty ""} <%-- Empty string --%>
\${(1<2) || (4<3)}	${(1<2) || (4<3)} <%--OR--%>	\${empty null}	${empty null} <%-- null --%>
\${!(1<2)}	${!(1<2)} <%-- NOT -%> <%-- Handles null or empty string in request param --%>	\${empty param.blah}	${empty param.blah}