very please help in Plugins

I would like to enter the code below the following features.
To have added a button to edit the posts to post then referred to as secret in the secret party and I showed him where you could add that this post can see if someone can help me or at least imputation of any function should use?

Provides plug-in code:

<?php
function specialpage_menu()
{
	add_pages_page(__('Special Page', 'specialpage'), __('Special Page', 'specialpage'), 'edit_pages', 'specialpage', 'specialpage');
}
add_filter('plugin_row_meta', 'specialpage_set_plugin_meta', 10, 2 );
add_action('admin_menu', 'specialpage_menu');

function specialpage()
{
global $wpdb;
$parentID = 0;

if (isset($_POST['btnSubPages'])) {
	$parentID = $_POST['pages'];
}
elseif (isset($_POST['hdnParentID'])) {
	$parentID = $_POST['hdnParentID'];
}

if (isset($_POST['btnReturnParent'])) {
	$parentsParent = $wpdb->get_row("SELECT post_parent FROM $wpdb->posts WHERE ID = " . $_POST['hdnParentID'], ARRAY_N);
	$parentID = $parentsParent[0];
}

if(isset($_GET['hideNote'])) {
	update_option('specialpage_hideNote', '1');
}

$success = "";
if (isset($_POST['btnOrderPages'])) {
	$success = specialpage_updateOrder();
}

$subPageStr = specialpage_getSubPages($parentID);
}

?>