Editorial The fifth issue of Hispania Judaica Bulletin comes out with two innovations. With this issue the Bulletin turns into a trilingual journal. We have so far published the Bulletin exclusively in English, not as a matter of principle, but rather for convenience. We have assumed that English was the most widely understood language in the academic world. Our decision to publish articles in Castilian and Hebrew, in addition to English, is based on our belief that both Castilian and Hebrew are the two natural languages that many specialists of Sefardi history and Hispanists as well experts in Jewish studies know, or are familiar with at least one them. The editors are aware that there are more languages pertaining to Sefardi studies, such as Catalan and Portuguese, but our editorial team would find it difficult to cope with more than the three languages in which the Bulletin will be published from this issue onwards. The additional languages necessitate new guidelines to our prospective contributors which are found at the end of this issue. The second innovation is the publication of studies prepared in the framework of the project undertaken by Hispania Judaica on “The Expulsion of the Jews from Spain and its Aftermath in the Life of the Refugees and their Children”. Nine scholars are taking part in the project which is supported by the Israel Science Foundation founded by the Israel Academy of Sciences and Humanities. We decided to publish in stages some of the results of the on-going research prior to the publication of the corpus of sources and the relevant studies which will conclude the project so that results of the research be known to scholars and students as soon as reasonably possible. Apart from articles dealing with linguistics in which the transcription is accordance with the author’s suggestion, in all the rest we follow more or less the system used by the Encyclopedia Judaica. The articles in this issue cover a very wide spectrum of topics dealing with a variety of disciplines. Ashkenazi influence on Catalan Kabbalah (Moshe Idel), pre-Expulsion musical traditions in Sefarad (Edwin Seroussi), a thirteenth century Jewish will from Barcelona (Francisco Hernández), Nahmanides’ concept of menstruation (Hannah Davidson), Jewish elements in Cervantes’ work (Ruth Fine), Yitshaq Abravanel’s rhetorical trend (Cedric Cohen-Skalli) and the myth of [Hispania Judaica *5 5767/2007]