568. In some cases these are provided beforehand, because of their foreseen necessity. The office stenographer, if anxious to give full satisfaction to his employer, will, when a lull of regular business allows it, examine letter-books, catalogues, etc., relating to the business of the establishment, and wherever it may seem necessary, will deliberately and carefully invent facile methods of representing particularly difficult terms or phrases that the employer is likely to use in dictation. The professional reporter, who has been engaged to report a particular law case, will, if he is wise, take occasion beforehand to glance over, or, indeed, carefully examine, books and papers embodying the names, the facts, the precedents, the arguments which will be brought into the consideration of the case in court; and he will, so far as seems desirable, make special provision by irregular phraseograms for specially difficult word-groups which are likely to be frequently uttered.