If you add any eCart functionality to the page then it should show up, so bindings will appear on add to cart pages or display pages.
If you are starting from nothing then you would have to manually add the eCart reference to the page to have the bindings appear. The necessary code is:
<?php
//WA eCart Include
require_once("WA_eCart/eCart1_PHP.php");
?>
<?php
$eCart1->GetContent();
?>
<?php
// WA eCart Redirect
if ($eCart1->redirStr != "") {
if (function_exists("rel2abs")) $eCart1->redirStr = rel2abs($eCart1->redirStr,dirname(__FILE__));
header("Location: ".$eCart1->redirStr);
die();
}
?>