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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Bibloc Tutorial (was Re: Ownership of Names (was Re: Public identifiers
 At 01:26 PM 9/30/98 -0400, John Cowan wrote: >Is there a useful tutorial about biblocs? I would like to >understand them further. Bibliographic location addresses as defined by the HyTime architecture are nothing more than containers that describe how to find something that is not directly addressible by electronic means (that is, that your computer cannot deliver to you directly). In formal HyTime terms, anything from which a grove cannot be constructed can only be addressed by a bibloc. They are called "bibliographic locations" because they use the "bibliographic" model of addressing, that is, the way we cite things like books by giving enough information about them to allow another person to find the thing. The purpose biblocs serve in a HyTime context is to allow HyTime's addressing facilities to be closed over all possible things: anything you can't address electronically you can address through a bibloc, which serves an electronic proxy for the non-electronic thing. Biblocs are represented in SGML or XML documents as elements and are therefore inherently electronically addressible: <lost.book.loc id="lost.book.1" hytime="bibloc"> A book that is lost to history, known only by mentions of it in other books. </lost.book> The online result of addressing a bibloc is that you get the bibloc, as there's no way for the computer to get what the bibloc addresses. A bibloc can have a "bibliographic source", which is another bibloc that establishes the addressing context for the first bibloc: <library.definition id="UT.PCL" hytime="bibloc"> PCL library, University of Texas at Austin </library.definition> <book id="some.book" bibsrc="UT.PCL" hytime="bibloc"> Top floor, third cubby on the left, under the chair, you'll find a book I left last time I was there. </book> The 'library.definition' bibloc is the bibliographic source for the the 'book' bibloc. A reference to the book bibloc should return both the book bibloc and the library definition bibloc. If I wanted to create a hyperlink to the book, I could do this: <link linkend="#id(some.book)" hytime=clink>A book I lost</link> The content of a bibloc is not defined or constrainted by the HyTime architecture. It could be anything, including data in a notation defined by some other standard, such as MARC records, Library of Congress catalog numbers, etc. The formal definition of the bibloc element form is to be found at <http://www.ornl.gov/sgml/wg8/docs/n1920/html/clause-7.12.html>, clause 7.12 of ISO/IEC 10744:1997. Cheers, E. -- <Address HyTime=bibloc> W. Eliot Kimber, Senior Consulting SGML Engineer ISOGEN International Corp. 2200 N. Lamar St., Suite 230, Dallas, TX 75202. 214.953.0004 www.isogen.com </Address> xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...) 
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