2.3/help_8php_source.html

 <?php

 $help = elgg_extract('help', $vars, '');
 if (!$help) {
     return;
 }

 echo elgg_format_element('div', [
     'class' => 'elgg-field-help elgg-text-help',
         ], $help);
$help
$help
Form input help text view.
Definition: help.php:8

$vars
$vars['entity']
Definition: plugin_settings.php:15

elgg_format_element
elgg_format_element($tag_name, array $attributes=array(), $text= '', array $options=array())
Format an HTML element.
Definition: output.php:208

echo
elgg echo
Translates a string.
Definition: languages.js:48

elgg_extract
elgg_extract($key, $array, $default=null, $strict=true)
Checks for $array[$key] and returns its value if it exists, else returns $default.
Definition: elgglib.php:1375