Is there a wordpress class that can be extended to access all wordpress functions?

My code is not complicated, but I just cant see what I am doing wrong.

CODE-

array(
“name” => “image”,
“std” => “”,
“title” => “Image”,
“description” => “Using the \”Add an Image\” button, upload an image and paste the URL here.”)
);

function add_custom_box(){
//global $post, $new_meta_boxes;

/*foreach($new_meta_boxes as $meta_box) {
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].’_value’, true);

if($meta_box_value == “”)
$meta_box_value = $meta_box['std'];*/

// Use nonce for verification

echo ”;

// The actual fields for data entry

echo ” . __(“Description for this field”, ‘myplugin_textdomain’ ) . ‘ ‘;
echo ”;
}

function create_custom_box() {
$current_user = wp_get_current_user();
$user_level = intval($current_user->user_level);

if($user_level == 10) {
if ( function_exists(‘add_meta_box’) ) {
add_meta_box( ‘myplugin_sectionid’, __( ‘Page Settings1′, ‘myplugin_textdomain’), ‘add_custom_box’, ‘page’, ‘normal’, ‘high’ );
}
}

}

}

}

if (class_exists(“MultiPage”)) {
$MultiPage = new MultiPage();
}

//Actions and Filters
if (isset($MultiPage)) {
//Actions
add_action(‘admin_menu’, array(&$MultiPage, ‘create_custom_box’), 1);

//Filters

}
?>

URI is actually the recommended nomenclature.

(Uniform Resource Identifier) – The address of an Internet resource. A URI is the unique name used to access the resource.

It’s a bit of a picky different, but a URI can be much more varied, though many times it’s just a web address.

4. Plugin URI: Your Plugin URI

Shouldn’t that be URL?