This assumes you understand the standards from creating a new page. Sometimes you want to create independent boxes to include on different pages.

Create the following files

includes/boxes/box_hello_world.php

<?php
  $box_hello_world = new ent_view();
 
  $box_hello_world->snippets = array(
    'title' => 'Hello World',
    'content' => 'Lorem ipsum dolor',
  );
 
  echo $box_hello_world->stitch('views/box_hello_world');
?>

And here is an example of a template view file:

includes/templates/mytemplate.catalog/views/box_hello_world.inc.php

<article>
  <h1>{snippet:title}</h1>
  <p>{snippet:content}</p>
</article>

This is not very different from creating a new page. But when it comes to inserting the box on a page there are different approaches.

To include e.g. a box view somewhere in a page view, we simply use a PHP include.

includes/templates/template.catalog/pages/index.inc.php

  <?php include vmod::check(FS_DIR_APP . 'includes/boxes/box_hello_world.inc.php'); ?>

Please note:

The use of vmod::check() enables overriding the file using vQmod.

The constant FS_DIR_APP returns the file system path (FS) to your installation e.g. /home/me/public_html/.