1 2 Comma tests, evalute both but pass right most as expression result 3 4 4: <?cs var:2,4 ?> 5 6 also, "do nothing" lparen operator 7 4: <?cs var:(2,4) ?> 8 9 2: <?cs var:(4,2) ?> 10 11 3: <?cs var:max((1,3),2) ?> 12