Hello PHP'ers

I am having a problem with string delimiters. For some reason no matter what I do I 
can not get them to process correctly!!
For example, 

<?
$area_entered = "yes";
$date_entered = "no";
echo "$area_entered\t\t\t$date_entered<br>";
?>

That outputs: 
yes no

What am I doing wrong?! Is there something I need to set in the php.ini file? I would 
like to be able to type \n instead of <br> repeatidly!

Also, when working with cookies, if I have a cookie that is set by, 

if (!isset($cookies)) {
//Set Cookies
$cookie_user = setcookie ("username", $row["user"], time()+86400, "/", "localhost");
$cookie_pass = setcookie ("password", $row["pass"], time()+86400, "/", "localhost");
$cookie_step = setcookie ("step", "1", time()+86400, "/", "localhost");
$cookies_set = setcookie ("cookies", "y", time()+86400, "/", "localhost");
}

Is there a way to unset the cookie? Perhaps by,
$cookie_set = setcookie ("cookies",""); 
?

Thanks for your time,

Nick

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