The development of the technique of laser printing opens new ways for the writing of concordances to Latin texts, by means of electronic data processing. It is indeed possible to obtain as good a quality of printing as with traditional typography, even for a very important number of characters, which is always the case with concordances. A first step to obtaining perfection in the format of the final document consists in collecting data carefully and programming the software so as to provide scholars with a tool that will really facilitate their researches. Although the cutting out of the “useful context” is a very difficult problem to solve when using computers, as many data (punctuation, capital letters, diacritic signs...) as possible can be collected from the very beginning. These data will then make the text provided for each keyword more comprehensible. The programming must obviously be improved to take all the collected data into account. The reader of a concordance produced in such a way will have at his disposal a text easy to read not only because of its typographic quality, but also because of all its information on reference, punctuation, lemma, manuscript tradition; also he will be able to find in appendices pertinent frequency lists, lists of names and all sorts of lexical, morphological, syntactical information according to the work involved in the data collecting and programming.