//get linking command
    if(preg_match('/nolink/i',$param)){
        $linking = 'nolink';
    }else if(preg_match('/direct/i',$param)){
        $linking = 'direct';
    }else if(preg_match('/linkonly/i',$param)){
        $linking = 'linkonly';
    }else{
        $linking = 'details';
    }