Where is the PO PDF stored ?

Summary:

Content (required):

Hello,

Where is the PO PDF stored (accessible via the "View PDF" link in the app) please? in the database? somewhere else ?

How to have access to all PDF POs generated by the application (one per revision PO)? 

With a link to the job requests that generated the PO PDF for example ?

Thank you in advance

Kind regards

Version (include the version you are using, if applicable):

23A

Code Snippet (add any code snippets that support your topic, if applicable):