The aim of Practical Usage of Regular Expressions is to show that there are many practical uses of even simple regexes for tasks such as quality assurance (ensuring consistency), automating conversions, etc., in particular in conjunction with a translation tool, such as memoQ® or Trados Studio®. Although this book concentrates on a translation tool environment, the described basic language elements and examples apply to Microsoft® .NET®-based environments, and indeed, most regex engines.Even complex constructs are explained clearly with schematic diagrams and appropriate examples. The clear structure, many illustrative examples, useful regexes and syntax summary make the book ideal as reference. The extensive worked example gives beginners a painless introduction to regexes, and explains all needed concepts, except for the most advanced applications. The reader exercises (with solutions) also make the book ideal as tutorial.Although concise, the book provides entry- and intermediate-level regex users with detailed reference material, not just for translators, but also for general applications.This second edition has clarified the explanations of more advanced concepts such as lookarounds and atomic groups, and has been restructured to provide the reference material as Appendixes and so make it easier to use.