Is there a way to get the standard page editor into a custom administration settings page? I have been able to add other textarea boxes with toolbars, like TinyMCE/CKEditor but not replicate the exact same edit text/html view that wordpress uses when editing pages.
Oh, this was quite easy.
I had used:
$args = array("textarea_name" => "wpet_options[txt]", 'default_editor' => 'text'); wp_editor( 'xxx', "wpet_options[txt]", $args );
But what I really wanted was:
$post = get_post( 117, 'OBJECT' ); wp_editor( $post, 'editor' );
This page explains more: http://code.tutsplus.com/articles/quick-tip-using-wp_editor--wp-27136