string $selected[] = `ls -sl`;
for ( $node in $selected )
{
	// if $node is NOT at smooth previews level 1 unselect it
}

// everything left selected at this point will be at smooth preview level 1

string $selection[] = `ls -sl`;
int $smoothStateList[];
int $smoothState;

for($obj in $selection){

	// query smooth state
	$smoothStateList = `displaySmoothness -q -po $obj`;
	$smoothState = $smoothStateList[0];

	// if smoothed, deselect
	if($smoothState  == 3)
		select -d $obj ;
	
	
	
}