Returns HTML for guidelines for a text format.
$variables: An associative array containing:
function theme_filter_guidelines($variables) {
$format = $variables['format'];
$attributes['class'][] = 'filter-guidelines-item';
$attributes['class'][] = 'filter-guidelines-' . $format->format;
$output = '<div' . drupal_attributes($attributes) . '>';
$output .= '<h3>' . check_plain($format->name) . '</h3>';
$output .= theme('filter_tips', array(
'tips' => _filter_tips($format->format, FALSE),
));
$output .= '</div>';
return $output;
}