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filter is not described

graceful_fail_template filter-hook . WP 1.0


add_filter( 'graceful_fail_template', 'filter_function_name_9009' );
function filter_function_name_9009( $html ){
	// filter...

	return $html;

Where the hook is called

wp-includes/ms-deprecated.php 92-115
$message_template = apply_filters( 'graceful_fail_template',
'<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style type="text/css">
img {
border: 0;
body {
line-height: 1.6em; font-family: Georgia, serif; width: 390px; margin: auto;
text-align: center;
.message {
font-size: 22px;
width: 350px;
margin: auto;
<p class="message">%s</p>
</html>' );

Where in WP core the hook is used WordPress

Usage not found.