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Technology, however, evolved quickly thereafter, and by 1994 the IFLA Sections on Cataloguing and on Information Technology, the groups which had jointly sponsored development of the ISBD(CF) , had decided to begin updating the existing standard. The ISBD(CF) Review Group was formed to include experts from the Library of Congress, Uppsala Universitetsbibliotek, Bibliothèque national de France, and Biblioteca Nacional (Madrid), with John Byrum, Library of Congress, as chair and Ann Sandberg-Fox, Cataloging Consultant and Trainer, as editor. Several corresponding members volunteered to participate, including specialists from the United Kingdom, Canada, Netherlands, Denmark, Finland, and Croatia.
The Review Group was charged to examine the ISBD(CF) in all its provisions in order to ensure its ability to meet the current bibliographic needs of users in this highly volatile area. In particular attention was directed to four developments:
Based on responses received, the editor then readied a first draft of the revised ISBD(CF) . Decisions taken at an April 1995 meeting were then incorporated into a draft revised text that was subsequently issued -for world-wide review in September 1995.
Over 30 responses were submitted by individuals, library associations, and national libraries during the six-month review period. The total of these commentaries numbered about 110 pages of single-spaced text. In reviewing the responses, the editor found extensive statements regarding the issues covered in the "white papers". These comprised a mixture of positive comments (in support of the proposed text) and negative comments (non-support of the proposed text), accompanied by suggestions for changes and, in some cases, by actual proposed rewording of the text. For each bibliographic area, the editor developed an issue paper to relay the specific comments in brief form to Review Group members. Ultimately, all problems were resolved, and the Review Group approved the resulting draft. Subsequently, the ISBD Maintenance Group, which is responsible for ensuring consistency among the ISBDs, studied the text and suggested a few changes to bring it into closer alignment with the general ISBD framework; the text now incorporates these changes. This final version of the ISBD(ER) was voted on by the members of the IFLA Standing Committees sponsoring the project. The text was unanimously approved, and in mid-July 1997 the text was submitted to the firm of K. G. Saur which published the ISBD(ER) in late August.