The Memo series is meant for those who want to read original foreign literature in an easy to understand way.The main text is explained in English on the same page as follows:A commentary part in which idioms,phrasal verbs,pecular expressions of the author,historic events,geographical and proper names,etc. are explained.The expressions given in this part are inbold in the main text.A vocabulary part in which more rarely used words are given.So as to facilitate readers,only meanings of the particular context are specified.The words explained are pointed out by underlining their first of second letter.