Among all the powerful struments available to a development, the regular expressions surely occupy a dominant position. Their flexibility in both research and validation of strings and data makes them irreplaceable for a web development (and not only). Unfortunately, this flexibility is paid with a high price: the regular expressions every time are wrapped by a type of mistery aura. A layman who reads a line of a regex (as often called) will be able to recognize only sets of characters and symbols separated by parentheses, apparently without meaning. Is the cryptic syntax the main reason of why the study of this struments is often postponed.