It explains how to use UPC verification site in general.
It explains how to use drag and drop feature of the editing window.
It explains how to use add upc and vendor uploads features.
It explains how to correct the errors of the upc data.
It explains how to use the APL Comparison page.
It explains how to deny upcs in future.
It explains how to process the store collected upcs with the UPC Collector.
It explains how to use the phone app of APL Checker.
