{* parenthesis are allowed *}
{if ( $amount < 0 or $amount > 1000 ) and $volume >= #minVolAmt#}
{/if}
{* you can also embed php function calls *}
{if count($var) gt 0}
{/if}
{* check for array. *}
{if is_array($foo) }
.....
{/if}
{* check for not null. *}
{if isset($foo) }
.....
{/if}
{* test if values are even or odd *}
{if $var is even}
{/if}
{if $var is odd}
{/if}
{if $var is not odd}
{/if}
{* test if var is divisible by 4 *}
{if $var is div by 4}
{/if}
test if var is even, grouped by two. i.e.,
0=even, 1=even, 2=odd, 3=odd, 4=even, 5=even, etc.
{if $var is even by 2}
{/if}
{* 0=even, 1=even, 2=even, 3=odd, 4=odd, 5=odd, etc. *}
{if $var is even by 3}
{/if}
