File Source for edit

<?php
/**
* @version $Header$
* @package articles
* @subpackage functions
*/
/**
* Initialization
*/
require_once '../kernel/setup_inc.php';
require_once( ARTICLES_PKG_PATH."BitArticle.php" );
include_once( ARTICLES_PKG_PATH."lookup_article_topic_inc.php" );
if ( !$gBitSystem->verifyPackage( 'articles' ) ) {
$gBitSmarty->assign( 'msg', tra( "This package is disabled" ) . ": Articles" );
$gBitSystem->display( "error.tpl" , NULL, array( 'display_mode' => 'edit' ));
die;
}
if( !$gContent->isValid() ) {
$gBitSmarty->assign( 'msg', tra("Article topic not found") );
$gBitSystem->display('error.tpl', NULL, array( 'display_mode' => 'edit' ));
die;
}
$gBitSmarty->assign_by_ref( 'topic_info', $gContent->mInfo);
if( isset( $_REQUEST["fSubmitSaveTopic"] ) ) {
$gContent->storeTopic( $_REQUEST );
$gContent->loadTopic();
bit_redirect( ARTICLES_PKG_URL . "admin/admin_topics.php" );
} elseif( isset( $_REQUEST['fRemoveTopicImage'] ) ) {
$gContent->removeTopicImage();
}
$gBitSystem->display( 'bitpackage:articles/edit_topic.tpl' , NULL, array( 'display_mode' => 'edit' ));

Source for file edit_topic.php