Prime examples of such tools are Advanced Indexed searching, OCR & Scanning, setting up time stamp servers to apply fully encrypted certificate-based digital signatures in a document, digitally certifying a document with self-signed or certificate-based digital signatures, customizing stamps, redacting documents, print production, embedding of copyright restricted font types, making PDFs accessible, exporting/importing documents to different file formats, distilling and postcripting PDF files, just to name a few.