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Structure of the Tag Library
The Tag Library is organized into a number of chapters, each divided into sections
(which may also be divided into further sections). Navigation around the Tag Library
is through the Navigation Panel (Navbar) and through numerous direct links between
related components.
The table below outlines the structure and chapters (with their subsections) of this
document:
Getting Started
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Basic information for first time users and reference for experienced users, this chapter
describes the Tag Library document, how to navigate around the web pages of the complex
document, and introductory material for the BITS Tag Set. Also includes the Hierarchy
Diagrams, which are useful as introductions as well as reference.
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Elements
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Descriptions of the elements used in the BITS Tag Set. The elements are listed in
order by tag name. (For information on how each Element page is organized, see Introduction to Elements.)
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Attributes
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Descriptions of the attributes in the BITS Tag Set. Attributes are listed in order
by the name
used in tagging documents and in the schemas. (For information on how each Attribute
page is organized, see Introduction to Attributes.)
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Finding Information in Tag Library
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Contains two aids for locating a BITS element, an attribute or attribute value, an
element’s context, and related information:
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Tagging Documents
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How to use this Tag Set: descriptions and guidance for specific tagging issues. (See
Tagging Documents.)
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Technical Details
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Provides material for implementors and people modifying or installing the Tag Set
(See Technical Details.)
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Supporting Documentation Home
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The BITS Tag Set is available in three forms: an XML Document Type Definition (DTD),
a W3C XML Schema (XSD), and a RELAX NG Schema (RNG). Each of these formats is available
in two forms: a zipped file containing a downloadable version of the schema (often
in multiple files), and a readable/browsable version in which the internal markup
has been escaped.
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Using the Tag Library to Learn This Tag Set
If you want to learn about the elements and the attributes in this Tag Set so you
can tag documents or learn how the BITS book models are constructed, here is a good
way to start.
- Read the sections called Navigation and Structure of the Tag Library, taking particular note of what resources are available.
- Next, if you do not know the symbols used in the Hierarchy Diagrams, read the “Key to the Near & Far® Diagrams”.
- Scan the Hierarchy Diagrams to get a good sense of the top-level elements and their contents. (Find what is inside an <book>, now what is inside each of the large components of such as a <book-body> or the metadata <book-meta>. Keep working your way down through the hierarchy, into smaller and smaller structures.)
- Pick an element from one of the diagrams. (Look up the element in the Elements Section to find the full element, the definition, usage notes, content allowed inside the element, where the element may be used, and a list of any attributes. Look up one of the attributes to find its full name, usage notes, potential values, and whether it has a default.)
Finally, if you are interested in conversion from a particular source:
- Look at a book or book chapter in print or PDF (and look at the DTD/schema for the
other book if there is one).
- Can all the information you want to store from an book fit into the models shown in the diagrams?
- Do you have, or know how to get, all the information the models require? Will that information always be available for documents that are complete and correct?
- How difficult will it be to identify the parts of the information using the elements and attributes described in these models? Would changes to one or more models make this easier?
Terms and Definitions
Element
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Elements are nouns, like “speech”, “list”, and “edition”, that represent components
of books and book-parts, both the narrative matter of the book and the accompanying
metadata.
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Attribute
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Attributes hold facts about an element, such as which type of list (e.g., numbered,
bulleted, or plain) is being requested when using the List (<list>) tag, or the name of a pointer to an external file that contains an image. Each attribute
has both a name (e.g., @list-type) and a value (e.g., “bullet”).
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Metadata
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Data about the data, for example, bibliographic information. The distinction is between metadata
elements which describe a work (such as the name of the
publisher or the book title) versus elements which contain the textual and graphical
content of the work.
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Tag Library Typographic Conventions
<alt-text> | The tag name of an element (written in lower case with the entire name surrounded by “< >”) |
Alternate Text Name (for a figure, etc.) | The element name (long descriptive name of an element) or the descriptive name of an attribute (written in title case, with important words capitalized, and the words separated by spaces) |
@name | The “@” sign before a name indicates an attribute name. |
must not | Emphasis to stress a point |