have seen a popular revival of interest in the historic verse controversies and the textual debate. Factors include the growth of interest in the Received Text and the Authorized Version (including the King James Version Only movement) and the questioning of Critical Text theories, the 1995 book by Michael Maynard documenting the historical debate on 1 John 5:7, and the internet ability to spur research and discussion with participatory interaction. In this period, King James Bible defenders and opponents wrote a number of papers on the Johannine Comma, usually published in evangelical literature and on the internet. In textual criticism scholarship circles, the book by Klaus Wachtel Der byzantinische Text der katholischen Briefe: Eine Untersuchung zur Entstehung der Koine des Neuen Testaments, 1995 contains a section with detailed studies on the Comma. Similarly, Der einzig wahre Bibeltext?, published in 2006 by K. Martin Heide. Special interest has been given to the studies of the Codex Vaticanus umlauts by Philip Barton Payne and Paul Canart, senior paleographer at the Vatican Library. The Erasmus studies have continued, including research on the Valladolid inquiry by Peter G. Bietenholz and Lu Ann Homza. Jan Krans has written on conjectural emendation and other textual topics, looking closely at the Received Text work of Erasmus and Beza. And some elements of the recent scholarship commentary have been especially dismissive and negative. Catholic Church The Catholic Church at the Council of Trent in 1546 defined the Biblical canon as "the entire books with all their parts, as these have been wont to be read in the Catholic Church and are contained in the old Latin Vulgate". The Comma appeared in both the Sixtine (1590) and the Clementine (1592) editions of the Vulgate. Although the revised Vulgate contained the Comma, the earliest known copies did not, leaving the status of the Comma Johanneum unclear. On 13 January 1897, during a period of reaction in the Church, the Holy Office decreed that Catholic theologians could not "with safety" deny or call into doubt the Comma's authenticity. Pope Leo XIII approved this decision two days later, though his approval was not in forma specifica—that is, Leo XIII did not invest his full papal authority in the matter, leaving the decree with the ordinary authority possessed by the Holy Office. Three decades later, on 2 June 1927, Pope Pius XI decreed that the Comma Johanneum was open to investigation. King James