Scholars of diplomatics never had a fundamental opposition on using modern technology to support their research. Nevertheless no technology since the introduction of photography had such an impact on questions and methods of diplomatics as the computer had. This book discusses the methodological consequences of doing diplomatic research on huge corpora and fast text mining technologies. It gives examples of how to enlarge the digitised charter corpus and demonstrates research applying information technology on medieval and early modern charters asking pure diplomatic questions as well as doing historical or philological research.