PPV

From DPCanadaWiki

To be created/developped and updated Post-Processing Verification (PPV) is the process of final checking a post-processed text, done by a very experienced PPer. This is the last stage a project goes through at DPC before being sent to the PGC Whitewashers. The PPV Guidelines are available at FAQ Central.

Also, a person who does such work (also PPVer).