Change Title of PDF Document that is printed on the PDF?

Hello!

I read through all of the customization content and searched prior posts but can’t find anything about this.

We have a vendor who only accepts our orders as PDF files, we can’t send our orders to them via email. Because of this, we are using your (amazing!) plugin to create a PACKING SLIP PDF an we email that to the vendor as our order.

The PDF says “PACKING SLIP” below the company logo. We did every step of creating a custom template but don’t know what to change to make it say “PURCHASE ORDER” in place of “PACKING SLIP”.

We believe that it’s this line:

<h1 class="document-type-label">
<?php if( $this->has_header_logo() ) echo $this->get_title(); ?>
</h1>

But we don’t know where the get_title is coming from to change it.

Should we create a 3rd template on the server called purchase-order.php and change that line of code? What should we change it to?

Thanks!!