$kirby->root('kirby')
Returns the root of the Kirby core folder
Example
<?= $kirby->root('kirby') ?>Custom setup
If you want to overwrite the root you can do this in your index.php by passing a custom roots setup to the Kirby constructor.
<?php
include 'kirby/bootstrap.php';
$kirby = new Kirby([
'roots' => [
'kirby' => '/absolute/path/to/custom/root',
],
]);
echo $kirby->render();