A simple test follows:

${message}

Start with the increment operator:

a1 = ${a1}

a1 = ${a1}

a1 = ${a1}

Now the decrement operator:

a2 = ${a2}

a2 = ${a2}

a2 = ${a2}

a2 = ${a2}

a2 = ${a2}

a2 = ${a2}

a2 = ${a2}

Now the add operator:

op1 = ${op1}, op2 = ${op2}, op3 = ${op3}

op3 = ${op3}

And the subtract operator:

op1 = ${op1}, op2 = ${op2}, op3 = ${op3}

op3 = ${op3}

The comparison operators:

Item is: ${item}

Item is less than five.

Item is less than or equals to seven.

Item is greater than two.

= 10)>

Item is greater than or equal to ten.