Electronic Publishing Series
Volume 1 / 1996 to Volume 7 / 1997
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Book Series
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Book
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Book
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Chapter
Creating SGML documents
To be able to profit from SGML, you need a way to put your data into SGML using the DTD of your choice. Four options enable the creation of SGML documents, as shown in Figure 26.
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Document analysis
Document analysis is like data modeling, i.e. an abstraction of reality that is easier to handle than the real world. There is, however, no unique hidden document structure waiting to be discovered. Everyone s...
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Markup declarations
In this chapter you will learn how to define markup declarations and how to construct them using structure diagrams.
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Attribute declarations
It is not always obvious to make the choice between elements and attributes. For example, a letter may be a business letter and include a company logo, or a private letter, including a private address. You could ...
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Putting the DTD together
This chapter describes how to assemble the DTD, how to include some standard entity sets, and how to refer to a DTD.
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Chapter
Notation
There are several examples of types of data which require special processing:
mathematical formulas and graphics;
formatted ...
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SGML and EDI
Electronic Data Interchange (EDI) originated in the late seventies from a desire to improve commercial and other communications between organizations. It was first known as Trade Data Interchange (TDI). At fir...
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Short references
One of the objectives of SGML is to make it possible to use familiar typewriter and word-processing conventions for adding markup to a document. This is particularly useful if there is no SGML editor available...
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Graphics and SGML
In this chapter I discuss how it is possible to use SGML to describe graphics objects. This is of rather academic interest, as the recommended way of including graphics is via NOTATION. SGML is an inefficient ...
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A brief history of SGML
SGML is short for “Standard Generalized Markup Language.” To get a feeling for what markup is, consider the traditional processing of texts arriving at a publisher, ready to be printed. The copy editor annotates ...
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Document type components
To get focused, let’s start this chapter with some exercises: 1. Look at the document in Figure 16.
Figure 16 A Memorandum (SGML)... -
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How to keep up to date with SGML
There are several ways to find out more about SGML and to keep up to date with any SGML developments, new products, and so on. The following sections describe some of the channels that you can use.
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Structure diagrams
To bridge the gap between the results of the document analysis and writing the formal DTD the use of structure diagrams can be helpful. Structure diagrams are a way of enriching the tree structure that is easy to...
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Element declarations
Element declarations are constructed by introducing sequence connectors and occurrence indicators into model groups. The parts of element declarations are given in Table 14.
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Entity declarations
Entities are defined with an entity declaration. There are two types of entities: general entities and parameter entities.
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Some advice on DTDs
Some good DTDs exist in the public domain. They can provide a starting point for your own applications or as a source of inspiration.
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SGML features
To customize SGML, a number of “optional” features are defined. Whenever an optional feature is discussed in this book, I point this out. Not all features are available in all implementations.
