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This is an alpha version of this book.

## Index

### Symbols

#PCDATA keyword, Understanding Content Models
  DbXML, ubiquitous elements, The DocBook DTD as XML
  repetition and, #PCDATA and repetition
%gentext-language%, Changing the default language
8-bit characters, errors (SGML), Invalid 8-Bit Character

###

, Marked sections, The OASIS era, Making a Bibliography, Invalid 8-Bit Character, Using Jade and DSSSL to Publish DocBook Documents, The DSSSL Architecture, Other Modifications: Classifying a Role, Attribute Types, Installing the ModularDocBook Stylesheets, The DocBook DTD as XML, DocBk XML, Interchanging DocBook Documents

### A

Abbrev element, Traditional publishing inlines
absolute value (numbers), computing, Using Your Customization Layer
Accel element, User interfaces
Acronym element, Traditional publishing inlines
acronyms (DocBook XML), The DocBook DTD as XML
Action element, Programming languages and constructs
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Address element, Line-specific environments
addresses, Internet syntax, Glossary
ADEPT Publisher (Arbortext), FOSIs support, A Survey of Stylesheet Languages
admonitions, Block Elements
  DocBook types, Admonitions
  exclusions (DocBook), The DocBook DTD as XML
  removing from table entries, Removing Admonitions from Table Entries
Affiliation element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
alternatives (content model syntax), Understanding Content Models
ambiguity, content models, Content models and validity
ancestors (elements), DSSSL, Element expressions
Anchor element, Cross references
angle brackets
  coding as entities, Special characters
  SGML tags, Glossary
Answer element, Questions and answers
appearance
  cooked data, Glossary
  raw data, Glossary
  SGML and, Structured and Semantic Markup
  structure or content vs., Structured and Semantic Markup
  stylesheets, Glossary
Appendix element, Components
  typical structure, Making a Chapter
AppendixInfo element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
Application element, Operating systems, General purpose
Arbortext ADEPT Publisher, FOSIs support, A Survey of Stylesheet Languages
Arch attribute, Common Attributes
architecture
  computer or chip, Common Attributes
  DSSSL, DSSSL Stylesheets Are SGML Documents, The DSSSL Architecture
ArtHeader element
  V4.0, DocBook V4.1 and DocBook XML V4.1.2
  V5.0, DocBook 5.0
Article element, Components
article.class entity, removing (V4.0), DocBook V4.1 and DocBook XML V4.1.2
ArticleInfo element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
articles
  creating, Making an Article
  formats, listed, How can this markup help you?
ASCII character set, Structured and Semantic Markup
*.attlist parameter entities, DocBook Parameterization
attributes, Glossary
  case sensitivity (DocBook), Typing an SGML Document, Case-Sensitivity
  common, Common Attributes
    subsetting, Subsetting the Common Attributes
  declarations
    adding for new, The General Structure ofCustomization Layers
    name groups, prohibiting, The DocBook DTD as XML
  declared types, prohibiting (DocBook XML), The DocBook DTD as XML
  default values, Attribute Default Values
  DocBook DTD, customizing, Customizing DocBook
  DSSSL architecture, The DSSSL Architecture
  elements and, Elements and Attributes
  elements, referencing, Organization of Reference Pages
  names, An SGML Declaration, Attribute Types
  parameter entities, controlling, DocBook Parameterization
  removing, Removing an Attribute
  semantics, Organization of Reference Pages
  types, Attribute Types
  values
    quoting, Typing an SGML Document, Minimization, The DocBook DTD as XML
    specifying (entity declarations), No Attribute Value Specifications onEntity Declarations
Attribution element, Miscellaneous block elements
AudioObject element, DocBook V3.1
Author element, Meta-Information
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
AuthorBlurb element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2

### B

backends, stylesheet support, The DSSSL Architecture
backmatter, books and articles, Making Front- and Backmatter
BeginPage element (DocBook inclusions), The DocBook DTD as XML
BiblioDiv element, Sections
BiblioEntry element, Making a Bibliography
  V5.0, DocBook 5.0
bibliographies, creating, Making a Bibliography
Bibliography element, Components, Sections
Bibliomixed element, Making a Bibliography
BiblioSet element, DocBook V4.1 and DocBook XML V4.1.2
Big Cats
  Tigers, Examples
block elements, Components, Block Elements
  excluding from footnotes, The DocBook DTD as XML
  formal and informal elements, Examples, figures, and tables
  Graphic, Graphics
  inline elements vs., Block Elements
block quotations, Block Elements
BlockQuote element, Miscellaneous block elements
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Book element
  article.class entity, removing (V4.0), DocBook V4.1 and DocBook XML V4.1.2
  elements, ordering, Books
BookBiblio element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
BookInfo element
  changes, v4.0, DocBook V4.1 and DocBook XML V4.1.2
  V5.0, DocBook 5.0
books
  components, Components
  DocBook, making, Making a DocBook Book
  typical structure, Making a DocBook Book
BridgeHead element, Sections

### C

Callout (MediaObject), DocBook V3.1
CallOut element, Lists
CalloutList element, Lists
callouts, Glossary
cals-tbl.dtd file, DocBook Modules
CALS; Table Model. CALS, DocBook Modules
cannot be found errors, DTD Cannot Be Found
case expression (DSSSL), Conditionals
case sensitivity
  attributes (DocBook), Typing an SGML Document
  DocBook SGML declaration, Case-Sensitivity
  elements (DocBook), Typing an SGML Document
  markup, Typing an XML Document
  XML vs. SGML, XML and SGML Markup Considerations in This Book
catalog files
  DocBook distribution, installing, The DocBook Catalog
  errors, DTD Cannot Be Found
  Jade, setting up for, Setting Up the Catalog
  locating, Locating catalog files
  mapping to system, Fixing the Catalog
  multiple declarations, using, Use the Catalogs
  Open (SGML), Writing Your Own Driver
  pubic identifiers, resolving to system, Catalog Files
  public identifier, adding, Using Your Customization Layer
  sample, Catalog Files
  system identifiers, resolving, System Identifiers
  whitespace, Catalog Files
CATALOG keyword, Catalog Files
Caution element, Admonitions
CDATA, Attribute Types
  DbXML, The DocBook DTD as XML
  declared content, prohibiting, The DocBook DTD as XML
  marked sections, Marked sections, Only Explicit CDATA-Marked Sections Are Allowed
  XML instances, restrictions, No SUBDOC or CDATA External Entities
Chapter element, Components
  components, similarity to, Books
  errors, character data, Character Data Not Allowed Here
  typical chapter, structure, Making a Chapter
ChapterInfo element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
chapters, processing (DSSSL), Processing chapters
characters
  character sets
    SGML and XML documents, Understanding Content Models
    SGML documents, Structured and Semantic Markup
    Unicode character set (SGML errors), Invalid 8-Bit Character
  entities, Character and SDATA Entities
    declaration, DocBook Modules
    encoding as, Special characters
  entity sets
    entity sets
  errors (out of context), Character Data Not Allowed Here
  inline elements, Block Elements
  names, Attribute Types
  SGML declaration, An SGML Declaration
  strings (CDATA attribute), Attribute Types
chip architecture (elements), Common Attributes
Choice attribute, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
Citation element, Cross references
CiteRefEntry element, Cross references
CiteTitle element, Cross references
Class attribute
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
  constant element, DocBook V3.1
  index entries, ranges, Marking index terms
*.class parameter entities, DocBook Parameterization
classes
  elements, DocBook Parameterization
  mixtures, DocBook Parameterization
  removing entire class, Removing an Entire Class
ClassName element, Programming languages and constructs
CmdSynopsis element, Miscellaneous block elements
  removing, Removing Computer Inlines
colophon element, DocBook V3.1
combination rules (DTD), Structured and Semantic Markup
Command element, Operating systems
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
commands, Block Elements, Miscellaneous block elements
  syntax summary, Making a Reference Page
Comment element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
comments
  catalog files, Catalog Files
  DocBook DTD, changes to, DocBook Versions
  markup declarations (DocBook XML), The DocBook DTD as XML
Common Attribute Parameter Entities, DocBook Parameter Entity Reference
common attributes, Common Attributes
common.attrib parameter entity, Subsetting the Common Attributes
compatibility, DocBook versions, Organization of Reference Pages, DocBook Versions
compatibility, SGML/XML conversion
  attribute values, quoting, Typing an SGML Document
  case sensitivity, attribute and element names, Typing an SGML Document
  empty tags, Typing an SGML Document
  XML markup, case-sensitivity, Typing an XML Document
components, Books
  elements, Making an Article
computer architecture (elements), Common Attributes
computer vendors, Common Attributes
ComputerOutput element, Markup
Condition attribute, Common Attributes
conditionals (DSSSL), Conditionals
configuration data, storing in stylesheet, The DSSSL Architecture
Conformance attribute, Common Attributes
connectors (SGML), Understanding Content Models
Constant Class, removing (V5.0), DocBook 5.0
Constant element, Programming languages and constructs, DocBook V3.1
constants (DSSSL), Global Variables and Side Effects, Define expressions
constructs (programming), elements, Programming languages and constructs
content
  flow objects (DSSSL), Make expressions
  reordering, DSSSL, Selecting elements
content models
  elements, reference, Organization of Reference Pages
  elements, updating (DocBook XML), The DocBook DTD as XML
  examples, Content models and validity
  overview, Understanding Content Models
Contents attribute (V5.0), DocBook 5.0
cooked data, Glossary
  raw data
  bibliographies, Making a Bibliography
country codes, Common Attributes
cross references, Elements and Attributes, Block Elements, Cross references
  elements, Organization of Reference Pages
  languages, changing (stylesheets), Changing the default language
  XrefLabel attribute, Common Attributes
CSS, A Survey of Stylesheet Languages
CSS stylesheets, Structured and Semantic Markup
  example, CSS stylesheet
curly quotes (attribute values), Typing an SGML Document
customization (DocBook DTD)
  parameter entities, using, Glossary
customizing
  DocBook DTD, Customizing DocBook
    book organization, Books
    changing customization layers, Deciding How to Change a Customization Layer
    customization layers, Customization Layers
    general entities, DocBook Modules
    parameter entities, using, DocBook Parameter Entity Reference
    structure (customization layers), The General Structure ofCustomization Layers
    writing, testing and using customization layers, Writing, Testing, and Using a Customization Layer
    writing, testing, and using customization layers, Using Your Customization Layer, Testing Your Work
  DSSSL stylesheets, Customizing the Stylesheets
    language, changing, Changing the Localization

### D

data attributes, notations (XML prohibiting), No Data Attributes on Notations
data entities, Special characters, Glossary
data, selecting (DSSSL), Selecting data
Database element, General purpose
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Davenport Group (DocBook maintenance), The HaL and O'Reilly era
dbcent.mod file, DocBook Modules
dbgenent.mod file, If You Change DocBook, It's Not DocBook Anymore!, DocBook Modules
dbhier.mod file, DocBook Modules
dbnotn.mod file, DocBook Modules
dbpool.mod file, DocBook Modules
decimal points (.), numbers, Attribute Types
declarations
  character sets, errors, Invalid 8-Bit Character
  comment declarations, The DocBook DTD as XML
  document type and parameter entity (SGML), System Identifiers
  document type declaration, A Document Type Declaration, Physical Divisions: Breaking a Document into Physical Chunks, Glossary
    SGML, A Document Type Declaration
    XML, A Document Type Declaration, An Internal Subset
  entities
    attribute values, prohibiting (XML), No Attribute Value Specifications onEntity Declarations
    entity sets, DocBook Modules
  functions and constants (DSSSL), Define expressions
  multiple, using, Dealing with Multiple Declarations
  nsgmls parser, Using nsgmls
  passing explicitly, Testing Your Installation
  SGML and XML DTDs, Customization Layers
  SGML documents, Structured and Semantic Markup, An SGML Declaration
  system identifier, default (SGML), Catalog Files
  XML, An XML Declaration
Dedication element, Books
define expresssions (DSSSL), Let expressions
DELEGATE keyword, Catalog Files
description, changing (DocBook customization), If You Change DocBook, It's Not DocBook Anymore!
digits
  names, Attribute Types
  numbers, Attribute Types
directories, specifying (catalog file location), Locating catalog files
display version, Formal public identifiers
divisions
  Book, Books
  documents (DocBook), Physical Divisions: Breaking a Document into Physical Chunks
  elements, categories of (DocBook), Logical Divisions: The Categories of Elements in DocBook
DocBk XML DTD, DocBk XML
DocBook DTD
  ampersand (&) connector, Understanding Content Models
  Book, making, Making a DocBook Book
  CD-ROM, resources
    Appendix D in this book
  Changes for V5.0, Future Changes
  Changes for V4.0, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes
  Changes for V5.0, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes, Future Changes
  changes, future versions, Organization of Reference Pages
  customizing, Customizing DocBook
    customization layers, writing, testing, and using, Writing, Testing, and Using a Customization Layer
    parameter entities, Glossary
    using customization layer, Using Your Customization Layer
  document type definition, Structured and Semantic Markup
  documents
    creating in SGML, Creating DocBook Documents
    creating in XML, Making an XML Document
    DSSSL stylesheets, DSSSL Stylesheets
    interchanging, Interchanging DocBook Documents
  general entities, customizing, DocBook Modules
  history and overview, How Does DocBook Fit In?
  installation, Installing the DocBook DTD
    testing, Testing Your Installation
  instances, converting to XML, DocBook Instances as XML
  Lang attribute, Using the lang attribute
  markup considerations, SGML vs. XML, XML and SGML Markup Considerations in This Book
  modules, DocBook Modules
  online copies, Unpacking the DocBook V3.1 Distribution
  owner-identifier, version 3.1, Formal public identifiers
  parsing documents, Parsing DocBook Documents
  public identifiers, The DocBook Catalog
  publishing documents, Publishing DocBook Documents
  releases, rules for new versions, The Davenport era
  stylesheets
    installing, Installing the ModularDocBook Stylesheets
    languages, Changing the Localization
  table model, DocBook Modules
  text description, Formal public identifiers
  versions, DocBook Versions
    V4.1, DocBook V4.1 and DocBook XML V4.1.2
    V5.0, DocBook 5.0
  warnings, DocBook V3.1 Warnings
  XML, DocBook and XML
    converting to, The DocBook DTD as XML
    document type declaration, A Document Type Declaration
    XML-compliant version, The Davenport era
DocBook Technical Committee (OASIS), DocBook Versions
  DocBk XML DTD, DocBk XML
DocBook XML DTD
  versions
    V4.1.2, DocBook V4.1 and DocBook XML V4.1.2
DocInfo element
  changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
  reference page, meta-information, Making a Reference Page
DOCTYPE keyword, Catalog Files
Document Style Semantics and Specification Language
  DSSSL
DOCUMENT text class, Formal public identifiers
document type declaration, Glossary
  divisions of documents, Physical Divisions: Breaking a Document into Physical Chunks
  external subset, Glossary
  internal subset, An Internal Subset, Glossary
  SGML documents, A Document Type Declaration
  XML documents, A Document Type Declaration
document type definitions
  DTDs
documents
  creating
    DocBook, Creating DocBook Documents
    in XML (DocBook), Making an XML Document
  dividing, Physical Divisions: Breaking a Document into Physical Chunks
  external, references to, Glossary
  meta-information, Glossary
driver files, DocBook Modules
  DSSSL stylsheets, customizing, Customizing the Stylesheets
  example, Writing Your Own Driver
  language, changing default, Changing the default language
DSSSL, A Survey of Stylesheet Languages, Glossary
  architecture, The DSSSL Architecture
  stylesheets, Structured and Semantic Markup, DSSSL Stylesheets
    customizing, Customizing the Stylesheets
    downloading, Installing the ModularDocBook Stylesheets
    element expressions, Element expressions
    example, DSSSL stylesheet
    flow objects, empty, Make expressions
    print and HTML output (DocBook), Using Jade and DSSSL to Publish DocBook Documents
    style specifications, A Closer Look at
    style specifications, multiple, A Single Stylesheet for Both Print and HTML
DTDDECL, Catalog Files
  Jade, not supporting, DTDDECL Warnings
  warnings (unsupported), Testing Your Installation
DTDs, Structured and Semantic Markup
  cannot be found errors, DTD Cannot Be Found
  DocBook
    DocBook DTD
  DSSSL stylesheets, changing, DSSSL Stylesheets Are SGML Documents
  exclusions, Glossary
  inclusions, Glossary
  proprietary, Formal public identifiers
  public identifiers, Glossary
  text class, Formal public identifiers
  validating SGML documents against, Structured and Semantic Markup

### E

e-i-c element, FOSI stylesheet
effectivity attributes, removing, Subsetting the Common Attributes
element in context (e-i-c), FOSI stylesheet
*.element parameter entities, DocBook Parameterization
elements, Glossary
  abbrev, DocBook Element Reference
  abstract, DocBook Element Reference
  accel, DocBook Element Reference
  ackno, DocBook Element Reference
  acronym, DocBook Element Reference
  action, DocBook Element Reference
  adding, Adding Elements: Adding a Sect6
  address, DocBook Element Reference
  affiliation, DocBook Element Reference
  alt, DocBook Element Reference
  anchor, DocBook Element Reference
  answer, DocBook Element Reference
  appendix, DocBook Element Reference
  appendixinfo, DocBook Element Reference
  application, DocBook Element Reference
  area, DocBook Element Reference
  areaset, DocBook Element Reference
  areaspec, DocBook Element Reference
  arg, DocBook Element Reference
  article, DocBook Element Reference
  articleinfo, DocBook Element Reference
  artpagenums, DocBook Element Reference
  attributes, Elements and Attributes, Glossary
    attributes
    processing expectations, affecting, Organization of Reference Pages
  attribution, DocBook Element Reference
  audiodata, DocBook Element Reference
  audioobject, DocBook Element Reference
  author, DocBook Element Reference
  authorblurb, DocBook Element Reference
  authorgroup, DocBook Element Reference
  authorinitials, DocBook Element Reference
  beginpage, DocBook Element Reference
  bibliocoverage, DocBook Element Reference
  bibliodiv, DocBook Element Reference
  biblioentry, DocBook Element Reference
  bibliography, DocBook Element Reference
  bibliographyinfo, DocBook Element Reference
  biblioid, DocBook Element Reference
  bibliomisc, DocBook Element Reference
  bibliomixed, DocBook Element Reference
  bibliomset, DocBook Element Reference
  bibliorelation, DocBook Element Reference
  biblioset, DocBook Element Reference
  bibliosource, DocBook Element Reference
  blockinfo, DocBook Element Reference
  blockquote, DocBook Element Reference
  book, DocBook Element Reference
  bookinfo, DocBook Element Reference
  bridgehead, DocBook Element Reference
  callout, DocBook Element Reference
  calloutlist, DocBook Element Reference
  caption, DocBook Element Reference
  case sensitivity (DocBook), Typing an SGML Document, Case-Sensitivity
  case sensitivity (XML), XML and SGML Markup Considerations in This Book
  categories, DocBook divisions, Logical Divisions: The Categories of Elements in DocBook
  caution, DocBook Element Reference
  chapter, DocBook Element Reference
  chapterinfo, DocBook Element Reference
  citation, DocBook Element Reference
  citebiblioid, DocBook Element Reference
  citerefentry, DocBook Element Reference
  citetitle, DocBook Element Reference
  city, DocBook Element Reference
  classifying or subclassifying, Common Attributes
  classname, DocBook Element Reference
  classsynopsis, DocBook Element Reference
  classsynopsisinfo, DocBook Element Reference
  cmdsynopsis, DocBook Element Reference
  co, DocBook Element Reference
  collab, DocBook Element Reference
  collabname, DocBook Element Reference
  Colophon, DocBook V3.1
  colophon, DocBook Element Reference
  colspec, DocBook Element Reference
  command, DocBook Element Reference
  component-level, Making an Article
  components, navigation, Books
  computeroutput, DocBook Element Reference
  confdates, DocBook Element Reference
  confgroup, DocBook Element Reference
  confnum, DocBook Element Reference
  confsponsor, DocBook Element Reference
  conftitle, DocBook Element Reference
  Constant, DocBook V3.1
  constant, DocBook Element Reference
  constraint, DocBook Element Reference
  constraintdef, DocBook Element Reference
  constructorsynopsis, DocBook Element Reference
  content models (online reference), Deciding How to Change a Customization Layer
  contractnum, DocBook Element Reference
  contractsponsor, DocBook Element Reference
  contrib, DocBook Element Reference
  copyright, DocBook Element Reference
  coref, DocBook Element Reference
  corpauthor, DocBook Element Reference
  corpname, DocBook Element Reference
  country, DocBook Element Reference
  creating, Make expressions
  database, DocBook Element Reference
  date, DocBook Element Reference
  dbpool.mod file, declaring, DocBook Modules
  declarations
    adding for new, The General Structure ofCustomization Layers
    name groups, prohibiting, The DocBook DTD as XML
    parameter entities, controlling, DocBook Parameterization
  dedication, DocBook Element Reference
  description, semantics, Organization of Reference Pages
  destructorsynopsis, DocBook Element Reference
  DocBook DTD, customizing, Customizing DocBook
  DSSSL architecture and, The DSSSL Architecture
  edition, DocBook Element Reference
  editor, DocBook Element Reference
  element expressions (DSSSL), Element expressions, Selecting elements
  email, DocBook Element Reference
  emphasis, DocBook Element Reference
  empty
    empty elements
  entity attributes, External general entities
  entry, DocBook Element Reference
  entrytbl, DocBook Element Reference
  envar, DocBook Element Reference
  epigraph, DocBook Element Reference
  equation, DocBook Element Reference
  errorcode, DocBook Element Reference
  errorname, DocBook Element Reference
  errortext, DocBook Element Reference
  errortype, DocBook Element Reference
  example, DocBook Element Reference
  exceptionname, DocBook Element Reference
  exclusions, Glossary
  fax, DocBook Element Reference
  fieldsynopsis, DocBook Element Reference
  figure, DocBook Element Reference
  filename, DocBook Element Reference
  firstname, DocBook Element Reference
  firstterm, DocBook Element Reference
  footnote, DocBook Element Reference
  footnoteref, DocBook Element Reference
  foreignphrase, DocBook Element Reference
  formalpara, DocBook Element Reference
  funcdef, DocBook Element Reference
  funcparams, DocBook Element Reference
  funcprototype, DocBook Element Reference
  funcsynopsis, DocBook Element Reference
  funcsynopsisinfo, DocBook Element Reference
  function, DocBook Element Reference
  generic identifiers, Glossary
  glossary, DocBook Element Reference
  glossaryinfo, DocBook Element Reference
  glossdef, DocBook Element Reference
  glossdiv, DocBook Element Reference
  glossentry, DocBook Element Reference
  glosslist, DocBook Element Reference
  glosssee, DocBook Element Reference
  glossseealso, DocBook Element Reference
  glossterm, DocBook Element Reference
  graphic, DocBook Element Reference
  graphicco, DocBook Element Reference
  group, DocBook Element Reference
  guibutton, DocBook Element Reference
  guiicon, DocBook Element Reference
  guilabel, DocBook Element Reference
  guimenu, DocBook Element Reference
  guimenuitem, DocBook Element Reference
  guisubmenu, DocBook Element Reference
  hardware, DocBook Element Reference
  highlights, DocBook Element Reference
  holder, DocBook Element Reference
  honorific, DocBook Element Reference
  html:form, DocBook Element Reference
  imagedata, DocBook Element Reference
  imageobject, DocBook Element Reference
  imageobjectco, DocBook Element Reference
  important, DocBook Element Reference
  inclusions, Glossary
  index, DocBook Element Reference
  indexdiv, DocBook Element Reference
  indexentry, DocBook Element Reference
  indexinfo, DocBook Element Reference
  indexterm, DocBook Element Reference
  informalequation, DocBook Element Reference
  informalexample, DocBook Element Reference
  informalfigure, DocBook Element Reference
  informaltable, DocBook Element Reference
  initializer, DocBook Element Reference
  inlineequation, DocBook Element Reference
  inlinegraphic, DocBook Element Reference
  inlinemediaobject, DocBook Element Reference
  interface, DocBook Element Reference
  interfacename, DocBook Element Reference
  invpartnumber, DocBook Element Reference
  isbn, DocBook Element Reference
  issn, DocBook Element Reference
  issuenum, DocBook Element Reference
  itemizedlist, DocBook Element Reference
  itermset, DocBook Element Reference
  jobtitle, DocBook Element Reference
  keycap, DocBook Element Reference
  keycode, DocBook Element Reference
  keycombo, DocBook Element Reference
  keysym, DocBook Element Reference
  keyword, DocBook Element Reference
  keywordset, DocBook Element Reference
  label, DocBook Element Reference
  legalnotice, DocBook Element Reference
  lhs, DocBook Element Reference
  lineage, DocBook Element Reference
  lineannotation, DocBook Element Reference
  link, DocBook Element Reference
  linking to references, How can this markup help you?
  listitem, DocBook Element Reference
  lists, Lists
  literal, DocBook Element Reference
  literallayout, DocBook Element Reference
  lot, DocBook Element Reference
  lotentry, DocBook Element Reference
  manvolnum, DocBook Element Reference
  markup, DocBook Element Reference
  mathematics, Mathematics
  medialabel, DocBook Element Reference
  mediaobject, DocBook Element Reference
  mediaobjectco, DocBook Element Reference
  member, DocBook Element Reference
  menuchoice, DocBook Element Reference
  methodname, DocBook Element Reference
  methodparam, DocBook Element Reference
  methodsynopsis, DocBook Element Reference
  mixed content (DocBook XML), The DocBook DTD as XML
  mml:math, DocBook Element Reference
  modespec, DocBook Element Reference
  modifier, DocBook Element Reference
  mousebutton, DocBook Element Reference
  msg, DocBook Element Reference
  msgaud, DocBook Element Reference
  msgentry, DocBook Element Reference
  msgexplan, DocBook Element Reference
  msginfo, DocBook Element Reference
  msglevel, DocBook Element Reference
  msgmain, DocBook Element Reference
  msgorig, DocBook Element Reference
  msgrel, DocBook Element Reference
  msgset, DocBook Element Reference
  msgsub, DocBook Element Reference
  msgtext, DocBook Element Reference
  names in content models, Understanding Content Models
  nesting, Organization of Reference Pages
  new (DocBook V3.1), DocBook V3.1
  nonterminal, DocBook Element Reference
  note, DocBook Element Reference
  objectinfo, DocBook Element Reference
  olink, DocBook Element Reference
  ooclass, DocBook Element Reference
  ooexception, DocBook Element Reference
  oointerface, DocBook Element Reference
  option, DocBook Element Reference
  optional, DocBook Element Reference
  orderedlist, DocBook Element Reference
  orgdiv, DocBook Element Reference
  orgname, DocBook Element Reference
  otheraddr, DocBook Element Reference
  othercredit, DocBook Element Reference
  othername, DocBook Element Reference
  pagenums, DocBook Element Reference
  para, DocBook Element Reference
  paramdef, DocBook Element Reference
  parameter, DocBook Element Reference
  parsing, Content models and validity
  part, DocBook Element Reference
  partinfo, DocBook Element Reference
  partintro, DocBook Element Reference
  personblurb, DocBook Element Reference
  personname, DocBook Element Reference
  phone, DocBook Element Reference
  phrase, DocBook Element Reference
  pob, DocBook Element Reference
  postcode, DocBook Element Reference
  preface, DocBook Element Reference
  prefaceinfo, DocBook Element Reference
  primary, DocBook Element Reference
  primaryie, DocBook Element Reference
  printhistory, DocBook Element Reference
  procedure, DocBook Element Reference
  production, DocBook Element Reference
  productionrecap, DocBook Element Reference
  productionset, DocBook Element Reference
  productname, DocBook Element Reference
  productnumber, DocBook Element Reference
  programlisting, DocBook Element Reference
  programlistingco, DocBook Element Reference
  programming languages and constructs, Programming languages and constructs
  prompt, DocBook Element Reference
  proper usage, examples, Organization of Reference Pages
  property, DocBook Element Reference
  pubdate, DocBook Element Reference
  publisher, DocBook Element Reference
  publishername, DocBook Element Reference
  pubsnumber, DocBook Element Reference
  qandadiv, DocBook Element Reference
  qandaentry, DocBook Element Reference
  qandaset, DocBook Element Reference
  question, DocBook Element Reference
  quote, DocBook Element Reference
  refclass, DocBook Element Reference
  refdescriptor, DocBook Element Reference
  refentry, DocBook Element Reference
  refentryinfo, DocBook Element Reference
  refentrytitle, DocBook Element Reference
  reference, DocBook Element Reference, DocBook Element Reference
    synopses, Organization of Reference Pages
  referenceinfo, DocBook Element Reference
  refmeta, DocBook Element Reference
  refmiscinfo, DocBook Element Reference
  refname, DocBook Element Reference
  refnamediv, DocBook Element Reference
  refpurpose, DocBook Element Reference
  refsect1, DocBook Element Reference
  refsect1info, DocBook Element Reference
  refsect2, DocBook Element Reference
  refsect2info, DocBook Element Reference
  refsect3, DocBook Element Reference
  refsect3info, DocBook Element Reference
  refsection, DocBook Element Reference
  refsectioninfo, DocBook Element Reference
  refsynopsisdiv, DocBook Element Reference
  refsynopsisdivinfo, DocBook Element Reference
  releaseinfo, DocBook Element Reference
  remark, DocBook Element Reference
  removing, Removing Elements, Removing an Entire Class
  replaceable, DocBook Element Reference
  returnvalue, DocBook Element Reference
  revdescription, DocBook Element Reference
  revhistory, DocBook Element Reference
  revision, DocBook Element Reference
  revnumber, DocBook Element Reference
  revremark, DocBook Element Reference
  rhs, DocBook Element Reference
  root element, A Document Type Declaration, The Document (or Root) Element, A Document Type Declaration, The Document (or Root) Element
  row, DocBook Element Reference
  sbr, DocBook Element Reference
  screen, DocBook Element Reference
  screenco, DocBook Element Reference
  screeninfo, DocBook Element Reference
  screenshot, DocBook Element Reference
  secondary, DocBook Element Reference
  secondaryie, DocBook Element Reference
  sect1, DocBook Element Reference
  sect1info, DocBook Element Reference
  sect2, DocBook Element Reference
  sect2info, DocBook Element Reference
  sect3, DocBook Element Reference
  sect3info, DocBook Element Reference
  sect4, DocBook Element Reference
  sect4info, DocBook Element Reference
  sect5, DocBook Element Reference
  sect5info, DocBook Element Reference
  section, DocBook Element Reference
  sectioninfo, DocBook Element Reference
  sections, Sections
  see, DocBook Element Reference
  seealso, DocBook Element Reference
  seealsoie, DocBook Element Reference
  seeie, DocBook Element Reference
  seg, DocBook Element Reference
  seglistitem, DocBook Element Reference
  segmentedlist, DocBook Element Reference
  segtitle, DocBook Element Reference
  selecting, Selecting elements
  seriesvolnums, DocBook Element Reference
  set, DocBook Element Reference
  setindex, DocBook Element Reference
  setindexinfo, DocBook Element Reference
  setinfo, DocBook Element Reference
  SGML/XML, using, Structured and Semantic Markup
  sgmltag, DocBook Element Reference
  shortaffil, DocBook Element Reference
  shortcut, DocBook Element Reference
  sidebar, DocBook Element Reference
  sidebarinfo, DocBook Element Reference
  simpara, DocBook Element Reference
  simplelist, DocBook Element Reference
  simplemsgentry, DocBook Element Reference
  simplesect, DocBook Element Reference
  spanspec, DocBook Element Reference
  state, DocBook Element Reference
  step, DocBook Element Reference
  street, DocBook Element Reference
  structfield, DocBook Element Reference
  structname, DocBook Element Reference
  subject, DocBook Element Reference
  subjectset, DocBook Element Reference
  subjectterm, DocBook Element Reference
  subscript, DocBook Element Reference
  substeps, DocBook Element Reference
  subtitle, DocBook Element Reference
  superscript, DocBook Element Reference
  surname, DocBook Element Reference
  svg:svg, DocBook Element Reference
  symbol, DocBook Element Reference
  synopfragment, DocBook Element Reference
  synopfragmentref, DocBook Element Reference
  synopsis, DocBook Element Reference
  systemitem, DocBook Element Reference
  table, DocBook Element Reference
  tags, Glossary
  tbody, DocBook Element Reference
  term, DocBook Element Reference
  tertiary, DocBook Element Reference
  tertiaryie, DocBook Element Reference
  textdata, DocBook Element Reference
  textobject, DocBook Element Reference
  tfoot, DocBook Element Reference
  tgroup, DocBook Element Reference
  thead, DocBook Element Reference
  tip, DocBook Element Reference
  title, DocBook Element Reference
  titleabbrev, DocBook Element Reference
  toc, DocBook Element Reference
  tocback, DocBook Element Reference
  tocchap, DocBook Element Reference
  tocentry, DocBook Element Reference
  tocfront, DocBook Element Reference
  toclevel1, DocBook Element Reference
  toclevel2, DocBook Element Reference
  toclevel3, DocBook Element Reference
  toclevel4, DocBook Element Reference
  toclevel5, DocBook Element Reference
  tocpart, DocBook Element Reference
  token, DocBook Element Reference
  trademark, DocBook Element Reference
  type, DocBook Element Reference
  ulink, DocBook Element Reference
  user interfaces, describing, User interfaces
  userinput, DocBook Element Reference
  varargs, DocBook Element Reference
  variablelist, DocBook Element Reference
  varlistentry, DocBook Element Reference
  VarName, DocBook V3.1
  varname, DocBook Element Reference
  videodata, DocBook Element Reference
  videoobject, DocBook Element Reference
  void, DocBook Element Reference
  volumenum, DocBook Element Reference
  warning, DocBook Element Reference
  wordasword, DocBook Element Reference
  wrappers, Glossary
  xref, DocBook Element Reference
  year, DocBook Element Reference
ELEMENTS text class, Formal public identifiers
Emacs text editor, Typing an SGML Document
Email element, General purpose
Emphasis element, Traditional publishing inlines
  DSSSL, processing, Processing emphasis
empty elements, Elements and Attributes, Understanding Content Models, Glossary
  creating, Make expressions
  Graphic and InlineGraphic, V4.0, DocBook V4.1 and DocBook XML V4.1.2
  markup syntax, Typing an XML Document
  PCDATA keyword and, #PCDATA and repetition
  start tags, XML vs. SGML, XML and SGML Markup Considerations in This Book
empty flow objects (DSSSL), Make expressions
empty sets (DSSSL), Conditionals
empty tags, Typing an SGML Document
  #CONREF attributes, No #CONREF Attributes
end tags
  attributes and, Elements and Attributes
  beginning, Special characters
  case sensitivity, Case-Sensitivity
  empty elements, not requiring, Elements and Attributes
  errors, misspelling, Misspelled End Tag
  missing, errors, Missing End Tag
  omitting, Organization of Reference Pages
ending index terms (ranges), Marking index terms
entities, Glossary
  adding directly to DTD, Internal general entities
  characters, Special characters, Character and SDATA Entities
    declaration, DocBook Modules
    errors, Invalid 8-Bit Character
  declarations, attribute values (XML), No Attribute Value Specifications onEntity Declarations
  DSSSL stylesheets, DSSSL Stylesheets Are SGML Documents
  entity sets
    entity sets
  entity-ref (DSSSL), Make expressions
  errors, spelling, Bad Entity Reference
  functions, Entities
  general, General Entities, Glossary
    customizing, DocBook Modules
  inserting files, Physical Divisions: Breaking a Document into Physical Chunks
  parameter entities
    parameter entities
  SDATA, Character and SDATA Entities
  SGML/XML markup, Elements and Attributes
ENTITIES text class, Formal public identifiers
ENTITY attribute, Attribute Types
entity sets
  characters, DocBook Character Entity Reference
  ISO standard, obtaining, Getting the ISO Entity Sets
  locating, ISO Entity Set Missing
  missing, ISO Entity Set Missing
entity-ref (DSSSL flow objects), Make expressions
EntityRef attribute (graphics), V4.0, DocBook V4.1 and DocBook XML V4.1.2
Entry element, DocBook V3.1 Warnings
EnVar element, Operating systems
  V4.0, DocBook V4.1 and DocBook XML V4.1.2
environment
  DocBook extensions, affecting, Customizing DocBook
  variables, setting (catalog files), Finding the Catalog
EnvironVar element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
Epigraph element, Miscellaneous block elements
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Equation element, Equations
equations (elements), Mathematics
error messages
  character data out of context, Character Data Not Allowed Here
  nsgmls parser, Using nsgmls
  parsers, Understanding Parse Errors
  sets of related, Miscellaneous block elements
ErrorCode element, Programming languages and constructs
ErrorName element, Programming languages and constructs
errors
  8-bit characters (SGML), Invalid 8-Bit Character
  listing, comprehensive, Testing Your Work
  parsing, Understanding Parse Errors
ErrorType element, Programming languages and constructs
escape sequences (parameter entities), Removing Admonitions from Table Entries
Example element, Examples, figures, and tables
examples, Block Elements
*.exclusion parameter entities, DocBook Parameterization
exclusions, Glossary
  DocBook, uses, The DocBook DTD as XML
  element declarations, prohibiting (DocBook XML), The DocBook DTD as XML
  elements, Organization of Reference Pages
experience levels (users), Common Attributes
expressions (DSSSL), DSSSL Expressions
  conditionals, Conditionals
  nodes and node lists, manipulating, Selecting elements
Extensible Markup Language
  XML
Extensible Style Language
  XSL
extensions, DocBook DTD, Customizing DocBook
external declarations (XML), A Document Type Declaration
external general entities, External general entities, Glossary
  public identifiers, Glossary
  XML restrictions, No SUBDOC or CDATA External Entities
external subset, Glossary
  entity declarations (SGML/XML conversion), Character and SDATA Entities
  SGML document declarations, An Internal Subset

### F

false, testing for (DSSSL), Conditionals
FAQ element, Questions and answers
Figure element, Examples, figures, and tables, Graphics
figures, Block Elements
Filename element, Operating systems, General purpose
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
filenames, Block Elements
  catalog file, Fixing the Catalog
  tags, specifying, Structured and Semantic Markup
files
  catalog, Locating catalog files
  DocBook DTD distribution, Unpacking the DocBook V3.1 Distribution
  external, referencing, External general entities, Public Identifiers, System Identifiers, and Catalog Files
FirstTerm element, Cross references
fixed attributes, The DSSSL Architecture
float, Glossary
flow objects (DSSSL), Make expressions
  empty, Make expressions
fonts
  changes (inline elements), Block Elements
  fixed-width, programs and code, Line-specific environments
Footnote element, Traditional publishing inlines
  exclusions, Glossary
FootnoteRef element, Traditional publishing inlines
footnotes, exclusions (DocBook), The DocBook DTD as XML
for loop, DSSSL and, Loops
ForeignPhrase element, Markup
formal elements, Examples, figures, and tables
formal objects, exclusions (DocBook), The DocBook DTD as XML
formal public identifier
  FPI
formatting
  DSSSL stylesheets, elements, DSSSL Stylesheets
  elements, Organization of Reference Pages
  SGML documents, Structured and Semantic Markup
Formatting Output Specification Instance
  FOSI stylesheets
FOSI stylesheets, Structured and Semantic Markup, A Survey of Stylesheet Languages, Glossary
  example, FOSI stylesheet
FPI, Glossary
  format, standard, Formal public identifiers
  ISO Latin 1 character set, examples, Formal public identifiers
French language chapter, example, Using the lang attribute
frequently asked questions (FAQ), Questions and answers
frontmatter, books and articles, Making Front- and Backmatter
FuncDef element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
FuncPrototype element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
FuncSynopsis element, Miscellaneous block elements
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
  removing, Removing Computer Inlines
FuncSynopsisInfo element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
Function element, Programming languages and constructs
functions
  declaring your own (DSSSL), Define expressions
  DSSSL, Global Variables and Side Effects
    elements, selecting, Selecting elements
  function prototype, Making a Reference Page
  Scheme, passing as argument, Processing subscripts and superscripts

### G

GCA (Graphics Communication Association), Formal public identifiers
general entities, Glossary
  customizing, DocBook Modules
  external, Glossary
  external and internal, General Entities
  internal, Glossary
general writing (traditional publishing inlines), Traditional publishing inlines
general-purpose technical inline elements, General purpose
generic identifiers (GI), Glossary
GI (generic identifiers), Glossary
glossaries
  creating, Making Front- and Backmatter, Making a Glossary
  example, Making a Glossary
  glossary terms, Block Elements
Glossary element, Components, Sections
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
GlossDef element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
GlossDiv element, Sections
GlossList element, Lists
GlossSee element, No #CONREF Attributes
  DbXML, The DocBook DTD as XML
GlossSeeAlso element, No #CONREF Attributes
  DbXML, The DocBook DTD as XML
GlossTerm element, Cross references, Making a Glossary
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
  V5.0, changes, DocBook 5.0
glyphs (Unicode character references), DocBook Character Entity Reference
*.gml (ISO standard character entity sets), DocBook Modules
Graphic element, DocBook V4.1 and DocBook XML V4.1.2
  removal (v5.0), DocBook V3.1
  V5.0, changes, DocBook 5.0
graphics, Graphics
  embedded, storing outside SGML source, DocBook V4.1 and DocBook XML V4.1.2
Graphics Communication Association (GCA), Formal public identifiers
  registered public identifiers, assigning, Formal public identifiers
Group element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
groups
  content model syntax, Understanding Content Models
  PCDATA keyword, #PCDATA and repetition
GuIButton element, User interfaces
GUIIcon element, User interfaces
GUIMenu element, User interfaces
GUIMenuItem element, User interfaces
GUISubmenu element, User interfaces

### H

Hardware element, General purpose
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
hexadecimal numeric character references (XML), Special characters
hierarchical structure
  DocBook DTD, DocBook Modules
  elements, defining, Glossary
Highlights element, Miscellaneous block elements
HTML
  appearance, limitions of specification, Structured and Semantic Markup
  CSS, A Survey of Stylesheet Languages
  DSSSL flow objects, Make expressions
  DSSSL stylesheets, Using Jade and DSSSL to Publish DocBook Documents
  stylesheets, A Single Stylesheet for Both Print and HTML
    selecting, Writing Your Own Driver
    testing (DocBook), Installing the ModularDocBook Stylesheets
  translating SGML/XML documents, Publishing DocBook Documents
  XML vs., HTML and SGML vs. XML
Hypertext Markup Language
  HTML
hyphens (-), numbers, Attribute Types

### I

ID attribute, Common Attributes, Attribute Types
  glossary entries, Making a Glossary
  index entries, ranges, Marking index terms
  SGML start tags, Elements and Attributes
identifiers, generic, Glossary
IDREF attribute, Attribute Types
IDREFS attribute, Attribute Types
idreq.common.attrib parameter entity, Subsetting the Common Attributes
if expressions (DSSSL), Conditionals
IGNORE keyword (marked section), Marked sections, Only Explicit CDATA-Marked Sections Are Allowed
ImageObject element, DocBook V3.1
Important element, Admonitions
INCLUDE keyword (marked section), Marked sections
  XML, not allowing, Only Explicit CDATA-Marked Sections Are Allowed
*.inclusion parameter entities, DocBook Parameterization
inclusions, Glossary
  DocBook, uses, The DocBook DTD as XML
  element declarations, prohibiting (DocBook XML), The DocBook DTD as XML
  elements, Organization of Reference Pages
Index element, Books, Sections
  V5.0, changes, DocBook 5.0
indexdivcomponent.mix parameter entity (V5.0), DocBook 5.0
indexes
  creating, books and articles, Making Front- and Backmatter
  index marked up in DocBook (example), Printing an index
  marking index terms, Making an Index
  metainformation, Meta-Information
  printing, Printing an index
IndexTerm element, No #CONREF Attributes
  empty (DocBook XML), The DocBook DTD as XML
  inclusions, DocBook, The DocBook DTD as XML
  Zone attribute, Marking index terms
informal elements, Examples, figures, and tables
InformalExample element, Examples, figures, and tables
InformalFigure element, DocBook V3.1
InformalTable element, Examples, figures, and tables
  excluding from tables, The DocBook DTD as XML
inherited characteristics, calculating new values with, Processing subscripts and superscripts
initial substring matches (public identifiers), Catalog Files
inline elements, Inline Elements
  adding, Deciding What to Change
  block elements vs., Block Elements
  changing (dbpool.mod file), DocBook Modules
  computer inlines, removing, Removing Computer Inlines
  programming languages and constructs, Programming languages and constructs
  technical, Programming languages and constructs
  technical (general-purpose), General purpose
InlineEquation element, Equations, Mathematics
InlineGraphic element, Graphics, General purpose, DocBook V4.1 and DocBook XML V4.1.2
  changes, V5.0, DocBook 5.0
  removal (v5.0), DocBook V3.1
InlineMediaObject element, Graphics, DocBook V3.1
instance (DocBook document), Structured and Semantic Markup
interchange partners, Invalid 8-Bit Character
Interface element, Programming languages and constructs
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
InterfaceDefinition element, Programming languages and constructs
internal general entities, Internal general entities, Glossary
internal subset, Glossary
  entity declarations, Character and SDATA Entities
  parameter entities (XML), Only Explicit CDATA-Marked Sections Are Allowed
  SGML document declarations, An Internal Subset
  XML document type declarations, An Internal Subset
International Organization for Standardization
  ISO Entity Sets; ISO standards
Internet domain names format (registered public identifiers), Formal public identifiers
Internet names and addresses, Glossary
ISO Entity Sets
  Added Latin 2, DocBook Character Entity Reference
  Added Math Symbols: Arrow Relations, DocBook Character Entity Reference
  Added Math Symbols: Binary Operators, DocBook Character Entity Reference
  Added Math Symbols: Delimiters, DocBook Character Entity Reference
  Added Math Symbols: Negated Relations, DocBook Character Entity Reference
  Added Math Symbols: Ordinary, DocBook Character Entity Reference
  Added Math Symbols: Relations, DocBook Character Entity Reference
  Alternative Greek Symbols, DocBook Character Entity Reference
  Box and Line Drawing, DocBook Character Entity Reference
  Diacritical Marks, DocBook Character Entity Reference
  General Technical, DocBook Character Entity Reference
  Greek Letters, DocBook Character Entity Reference
  Greek Symbols, DocBook Character Entity Reference
  ISO Latin 1, DocBook Character Entity Reference
  Monotoniko Greek, DocBook Character Entity Reference
  Non-Russian Cyrillic, DocBook Character Entity Reference
  Numeric and Special Graphic, DocBook Character Entity Reference
  Publishing, DocBook Character Entity Reference
  Russian Cyrillic, DocBook Character Entity Reference
ISO standards
  country codes, Common Attributes
  DSSSL, A Survey of Stylesheet Languages
  entity sets
    characters, DocBook Modules, DocBook Character Entity Reference
    obtaining, Getting the ISO Entity Sets
    SDATA entities, problems with (XML), Character and SDATA Entities
  formal public identifiers, Formal public identifiers
  language codes, Formal public identifiers, Common Attributes
  SGML, Glossary
ItemizedList element, Lists

### J

Jade
  DSSSL, using (DocBook document), Using Jade and DSSSL to Publish DocBook Documents
  installing, Installing Jade
  Modular DocBook Stylesheets, Publishing DocBook Documents
  SP parser, using, Understanding Parse Errors
  style specifications, indicating selected, A Single Stylesheet for Both Print and HTML
Java Math class, Using Your Customization Layer
journal articles, How can this markup help you?, Making an Article

### K

KeyCap element, User interfaces
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
KeyCode class, User interfaces
KeyCombo element, User interfaces
KeySym element, User interfaces
Keyword attribute (V4.0), DocBook V4.1 and DocBook XML V4.1.2
keywords
  case sensitivity, XML, Case-Sensitivity
  catalog files, Catalog Files
  content model syntax, Understanding Content Models
  flow objects (DSSSL), defining, Make expressions
  keyword sets (meta-information), Meta-Information
  marked sections, Marked sections

### L

Lang attribute, Changing the Localization, Common Attributes
  removing, Subsetting the Common Attributes
languages
  codes, Using the lang attribute, Common Attributes
  default, changing, Changing the default language
  DocBook stylesheets, Changing the Localization
  document texts, Formal public identifiers
  stylesheets, A Survey of Stylesheet Languages
layers, customization (DocBook DTD), Customization Layers
let expressions (DSSSL), Let expressions
line breaks, preserving, Line-specific environments
line-specific environments, Block Elements, Line-specific environments
Link element, Cross references
LinkEnd attribute, Cross references
  GlossTerm tag, Making a Glossary
links
  glossary terms (text) to glossary entries, Making a Glossary
  SGML documents, maintaining, How can this markup help you?
Linux Documentation Project, Publishing DocBook Documents
LISP language, syntax, Scheme
lists, Block Elements
  elements, Lists
    exclusions, Organization of Reference Pages
  nodes, manipulating, Selecting elements
Lists of Titles
  LoT
Literal element, Markup, Programming languages and constructs, General purpose
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
LiteralLayout element, Line-specific environments
local parameter entities, DocBook Parameterization
local.tech.char.class parameter entity, Deciding How to Change a Customization Layer
locating catalog files, Locating catalog files
loops, implementing (DSSSL), Loops
LoT, Books

### M

major releases, DocBook DTD, DocBook Versions
make expressions (DSSSL), Make expressions
manpage (UNIX), Making a Reference Page
manual page, creating, Making a Reference Page
ManVolNum, Making a Reference Page
marked sections, Marked sections
  character sequence, ending, Special characters
  DSSSL stylesheets, DSSSL Stylesheets Are SGML Documents
  parameter entities, controlling, DocBook Parameterization, Glossary
  XML, restrictions, Only Explicit CDATA-Marked Sections Are Allowed
markup
  backmatter, books and articles, Making Front- and Backmatter
  case sensitivity, Typing an XML Document
  delimiters (characters), An SGML Declaration
  distinguishing from content, Special characters
  elements, Markup
  glossaries, Making a Glossary
  minimization, An SGML Declaration, Organization of Reference Pages
    removing, Typing an SGML Document
    SGML/XML conversion problems, Typing an SGML Document, Minimization
  previous schemes, identifying, Common Attributes
Markup element, Markup
mathematics (DocBook), Mathematics
MathML, incorporating, Mathematics
MediaLabel element, Operating systems, General purpose
MediaObject elements, Graphics, DocBook V3.1
MediaObjectCO element, DocBook V3.1
MenuChoice element, User interfaces
meta-information, Glossary
  DocBook Book, Making a DocBook Book
  elements, section-level and above, Meta-Information
  reference page, Making a Reference Page
  wrappers, Glossary
MethodName, adding with customization layer, Deciding How to Change a Customization Layer
minimization
  markup, An SGML Declaration
    net tag minimization, Typing an SGML Document
    SGML/XML conversion problems, Typing an SGML Document, Minimization
    start and end tags, Organization of Reference Pages
  removing, Typing an SGML Document
miscellaneous information, reference pages, Making a Reference Page
.mix parameter entities, DocBook Parameterization
Modular DocBook Stylesheets, Publishing DocBook Documents
  public identifiers, Writing Your Own Driver
*.module parameter entities, DocBook Parameterization
modules
  DocBook, DocBook Modules
  DocBook customization, The General Structure ofCustomization Layers
  DTDs, customizing, Customization Layers
  redeclarations, Removing Admonitions from Table Entries
MouseButton element, User interfaces
MsgSet element, Miscellaneous block elements
  removing, Removing MsgSet
MsgText element, Programming languages and constructs, Operating systems
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2

### N

NAME attribute, Attribute Types
name groups (DocBook XML), The DocBook DTD as XML
names
  assigning to data (entities), Entities
  case sensitivity, Case-Sensitivity
  elements (generic identifiers), Glossary
  individuals as owner-identifiers, Formal public identifiers
  Internet, syntax, Glossary
  NMTOKEN attribute, Attribute Types
  text, associating with (internal general entities), Internal general entities
  variable (VarName element), DocBook V3.1
NAMES attribute, Attribute Types
namespaces, Mathematics, No SUBDOC or CDATA External Entities
  XML tags, Elements and Attributes
nav.class entity, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
navigation, component-level elements, Books
nesting
  elements, Organization of Reference Pages, Glossary
  emphasis elements, DSSSL processing, Processing emphasis
  footnotes, Glossary
  paragraphs (DSSSL), Make expressions
  section elements, Sections
  simple page sequences (DSSSL), not allowed, Processing chapters
NMTOKEN(S) attribute, Attribute Types
  DbXML, The DocBook DTD as XML
nodes (DSSSL), DSSSL Processing Model, Selecting elements
NONSGML text class, Formal public identifiers
notation declarations (DocBook), DocBook Modules
notations (unparsed entities), External general entities
Note element, Admonitions
nsgmls parser, Parsing DocBook Documents
  DocBook installation, testing, Testing Your Installation
  SGML documents, validating, Using nsgmls
  warning types, Testing Your Work
  XML documents, validating, Using nsgmls
numbered sections, levels, Sections
numbers (attributes), Attribute Types
numeric character references, Special characters
NUTOKEN attribute, Attribute Types

### O

OASIS
  catalog file format, Catalog Files
  DocBook Technical Committee, The Davenport era, DocBook Versions
  entity sets (ISO standard), obtaining, Getting the ISO Entity Sets
  public identifiers, resolution mechanism, Public Identifiers, System Identifiers, and Catalog Files
  table model, DocBook Modules
  XML DocBook version, DocBook and XML
OLink element, Cross references
one-off customizations, The General Structure ofCustomization Layers
Open Software Foundation, The HaL and O'Reilly era
operating systems
  configurations, software support, Making a Reference Page
  elements, Common Attributes
  inline elements, Operating systems
Option element, Operating systems, General purpose
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
optional arguments (DSSSL functions), Processing subscripts and superscripts
Optional element, General purpose
options, Block Elements
  commands, marking up, Miscellaneous block elements
  error messages (parser), directing to file, Using nsgmls
OptMult attribute value (Choice), V4.0, DocBook V4.1 and DocBook XML V4.1.2
OrderedList element, Lists
OS attribute, Common Attributes
OtherTerm attribute, No #CONREF Attributes
OVERRIDE keyword, Catalog Files
owner-identifiers
  changing (DocBook customization), If You Change DocBook, It's Not DocBook Anymore!
  registered public identifers
    uniqueness, guaranteeing, Formal public identifiers

### P

Para element, Paragraphs, Understanding Content Models
  DSSSL, processing, Processing paragraphs
  PARA vs. (XML), Case-Sensitivity
paragraphs
  DSSSL flow objects, Make expressions
  DSSSL stylesheets, formattting, Element expressions
  paragraph-level elements, Block Elements
  titles, Out of Context Start Tag
Parameter element, Programming languages and constructs, Operating systems
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Parameter Entities
  *.attlist, DocBook Parameter Entity Reference
  *.attrib, DocBook Parameter Entity Reference
  *.attval, DocBook Parameter Entity Reference
  *.class, DocBook Parameter Entity Reference
  *.element, DocBook Parameter Entity Reference
  *.exclusion, DocBook Parameter Entity Reference
  *.hook, DocBook Parameter Entity Reference
  *.inclusion, DocBook Parameter Entity Reference
  *.mix, DocBook Parameter Entity Reference
  *.module, DocBook Parameter Entity Reference
  *.role.attrib, DocBook Parameter Entity Reference
  db*, DocBook Parameter Entity Reference
  Hooks, DocBook Parameter Entity Reference
  ISO Entity Sets, DocBook Parameter Entity Reference
  iso*, DocBook Parameter Entity Reference
  local.*.attrib, DocBook Parameter Entity Reference
  local.*.class, DocBook Parameter Entity Reference
  local.*.mix, DocBook Parameter Entity Reference
  Modules, DocBook Parameter Entity Reference
  Role Attribute, DocBook Parameter Entity Reference
parameter entities, Parameter Entities, Glossary
  *.attlist, DocBook Parameterization
  *.element, DocBook Parameterization
  *.exclusion, DocBook Parameterization
  *.inclusion, DocBook Parameterization
  *.module, DocBook Parameterization
  customization layers, Customization Layers, DocBook Parameterization
  DbXML, ubiquitous element inclusions, The DocBook DTD as XML
  DocBook DTD, including by reference, The General Structure ofCustomization Layers
  DTD modules, referencing, Customization Layers
  elements, Organization of Reference Pages
  empty, Removing Synopsis Elements
  empty classes, redefining for, Removing an Entire Class
  reference, DocBook Parameter Entity Reference
  reference (online), Deciding How to Change a Customization Layer
  Role attribute, Common Attributes
  SGML declarations, System Identifiers
  tabentry.mix (removing admonitions), Removing Admonitions from Table Entries
  table model (CALS), modifying, DocBook Modules
  tech.char.class, redefining, Removing Computer Inlines
  XML document body, Only Explicit CDATA-Marked Sections Are Allowed
parameters (commands), markup, Miscellaneous block elements
parsed entities, Entities
parsers
  content models, matching to elements, Content models and validity
  entity references, interpreting, Special characters
  external file text, inserting, External general entities
  free, Parsing DocBook Documents
  non-validating, Parsing DocBook Documents
  validating, Structured and Semantic Markup, Parsing DocBook Documents
parsing
  DocBook documents, Parsing DocBook Documents
  DTDs, entity declarations (repeated), Customization Layers
  empty start tags, problems with, Typing an SGML Document
  errors, Understanding Parse Errors
  order, An Internal Subset
    XML document declarations, An Internal Subset
Part element, Books, Components
periods (.), names, Attribute Types
person.ident.mix parameter entity, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
Phrase element, Traditional publishing inlines
PI
  processing instructions
placeholders, redeclarations, Removing Admonitions from Table Entries
point-releases (DocBook DTD), compatibility, DocBook Versions
Preface element, Components
  typical structure, Making a Chapter
prefix (registered and unregistered public identifiers), Formal public identifiers
presentation
  appearance
primary level index entries, Marking index terms
printing
  stylesheets, Processing chapters, Writing Your Own Driver, A Single Stylesheet for Both Print and HTML
Procedure element, Miscellaneous block elements
processing expressions (DSSSL), Processing expressions
processing instructions, Glossary
  XML documents, XML and SGML Markup Considerations in This Book
processing model (DSSSL), DSSSL Processing Model
ProgramListing element, Line-specific environments
programming languages (elements), Programming languages and constructs
prologue
  SGML documents, Making an SGML Document
  XML documents, Making an XML Document
Prompt element, Markup, Operating systems
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Property element, Programming languages and constructs
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
proprietary DTDs, unavailable public texts, Formal public identifiers
public identifiers, Glossary
  dbgenent.mod file, changing, If You Change DocBook, It's Not DocBook Anymore!
  DocBook DTD
    altering, If You Change DocBook, It's Not DocBook Anymore!
    customization layer, Using Your Customization Layer
    examples, XML and SGML Markup Considerations in This Book
    V3.1, The DocBook Catalog
  errors, DTD Cannot Be Found
  external subset, Glossary
  formal, Glossary
  Modular DocBook Stylesheets, Writing Your Own Driver
  names, requirements, Public Identifiers, System Identifiers, and Catalog Files
  partial (initial substring matches), Catalog Files
  quotes, Catalog Files
  registered, assigning authority, Formal public identifiers
  resolution, mapping to system identifiers, Public Identifiers, System Identifiers, and Catalog Files
  SGML, An Internal Subset, System Identifiers
  syntax, examples, Public Identifiers
  system identifiers, overriding, System Identifiers
  XML documents, A Document Type Declaration
PUBLIC keyword, Catalog Files
Publisher element, Meta-Information
publishing DocBook documents, Publishing DocBook Documents
punctuation characters, quoting (attribue values), Typing an SGML Document
purpose (reference pages), Making a Reference Page

### Q

QandASet element, Questions and answers, DocBook V3.1
Question element, Questions and answers
question marks (?), processing instructions (XML), XML and SGML Markup Considerations in This Book
questionnaire, DocBook document interchange issues, Interchanging DocBook Documents
quotations (block), Block Elements
Quote element, Traditional publishing inlines
quotes
  attribute values, Typing an XML Document, Minimization
    DbXML, The DocBook DTD as XML
    spaces and punctuation characters, Typing an SGML Document
  public and system identifiers, Catalog Files

### R

ranges, index entries, Marking index terms
raw data, Glossary
  cooked data
  bibliographies, Making a Bibliography
RCDATA, Only Explicit CDATA-Marked Sections Are Allowed, The DocBook DTD as XML
redeclarations
  modules, Removing Admonitions from Table Entries
  placeholders, Removing Admonitions from Table Entries
RefClass element, Making a Reference Page
RefDescriptor element, Making a Reference Page
RefEntry element, Books, Sections
  elements, obligatory, Making a Reference Page
RefEntryTitle element, Making a Reference Page
Reference element, Books
reference pages
  creating, Making a Reference Page
  sample page, Making a Reference Page
references
  entities (DSSSL), Make expressions
  external documents, Glossary
RefMeta element, Making a Reference Page
RefMiscInfo element, Making a Reference Page
RefName element, Making a Reference Page
RefNameDiv element, Making a Reference Page
RefPurpose element, Making a Reference Page
RefSect1 element, Making a Reference Page
RefSect1…RefSect3, Making a Reference Page
RefSynopsisDiv element, Making a Reference Page
registered public identifiers, Formal public identifiers
relative system identifiers, Catalog Files
Remap attribute, Common Attributes
  removing, Subsetting the Common Attributes
Remark element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
RenderAs attribute, removing, Removing an Attribute
Rep attribute, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
repetitions (content model syntax), Understanding Content Models
Replaceable element, Markup, Programming languages and constructs, General purpose
ReqMult attribute value (Choice), V4.0, DocBook V4.1 and DocBook XML V4.1.2
ReturnValue element, Programming languages and constructs
RevHistory element (V5.0), DocBook 5.0
Revision attribute, Common Attributes
revision histories, Meta-Information
RevisionFlag attribute, Common Attributes
Role attribute, Common Attributes
  changing on Procedure (example), Other Modifications: Classifying a Role
  systemitem tags, subdividing, Elements and Attributes
root element, The Document (or Root) Element
  document type declaration, A Document Type Declaration, A Document Type Declaration
  placement, The Document (or Root) Element

### S

Scheme language
  DSSSL stylesheets, DSSSL stylesheet
  function, passing as argument, Processing subscripts and superscripts
  syntax, Scheme
score (DSSSL flow object), Make expressions
Screen element, Line-specific environments
ScreenShot element, Line-specific environments, Graphics
SDATA entities, Character and SDATA Entities
secondary level index entries, Marking index terms
Section element, Sections, DocBook V3.1
sections
  elements, Components
  elements, removing, Removing Sectioning Elements
  ordering, DocBook DTD rules (example), Structured and Semantic Markup
  RefEntry, levels, Making a Reference Page
Security attribute, Common Attributes
see and see also index entries, Marking index terms
SegmentedList element, Lists
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
selecting data (DSSSL), Selecting data
selecting elements (DSSSL), Selecting elements
semantic content, SGML marking for, Structured and Semantic Markup
semantic markup, Structured and Semantic Markup
  presentation media, different, How can this markup help you?
semantics (elements), describing, Organization of Reference Pages
sequences
  content model syntax, Understanding Content Models
  DSSSL flow objects, Make expressions
SeriesInfo element, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
SetIndex element (V5.0), DocBook 5.0
SetInfo element (V5.0), DocBook 5.0
Sets, Sets
SetTitle elements (V4.0), DocBook V4.1 and DocBook XML V4.1.2
SGML, Glossary
  basic concepts, Basic SGML/XML Concepts
  case sensitivity, XML and SGML Markup Considerations in This Book
  declarations, An SGML Declaration
  document type declaration, A Document Type Declaration
  documents, creating, Making an SGML Document
  DSSSL stylesheets, Using Jade and DSSSL to Publish DocBook Documents, DSSSL Stylesheets Are SGML Documents
  external documents, referencing (external general entities), External general entities
  FOSIs, FOSI stylesheet
  getting started, Getting Startedwith SGML/XML
  HTML vs., HTML and SGML vs. XML
  keywords as parameter entities, Marked sections
  marked sections, Marked sections
  markup minimization
    XML/SGML compatibility
  public identifiers, Glossary
  resources, reference, Resources
  system identifiers, Public Identifiers, System Identifiers, and Catalog Files, Glossary
    example, Public Identifiers, System Identifiers, and Catalog Files
  tags, Glossary
  text editors, entering through, Typing an SGML Document
  XML and, DocBook and XML, Glossary
  XML/SGML compatibility
    case sensitivity, Typing an SGML Document
    empty tags, Typing an SGML Document
    markup minimization, problems, Typing an XML Document
    markup minimizations, removing, Typing an SGML Document
    net tag minimization, Typing an SGML Document
    quotes, attribute values, Typing an SGML Document
SGML_CATALOG_FILES environment variable, setting, Finding the Catalog
SGMLDECL keyword, Catalog Files
sgmlnorm (SGML to XML conversion), Typing an SGML Document
SGMLTag element, Markup
Shortcut element, User interfaces
side effects (DSSSL), Global Variables and Side Effects
sidebars, Block Elements
simple-page-sequence (DSSSL)
  chapters, constructing, Processing chapters
  flow object, Make expressions
SimpleList element, Lists
SimpleSect element, Sections
singular index markers, Marking index terms
smallcptr.char.mix parameter entity, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
sosofo (DSSSL), Make expressions
SP nsgmls parser
  nsgmls parser
spaces, quoting (attribute values), Typing an SGML Document
special characters, encoding as entities, Special characters, Glossary
start characters, changing, Special characters
start tags
  attribute ID, containing, Elements and Attributes, Glossary
  beginning, Special characters
  case sensitivity, Case-Sensitivity
  empty element, XML and SGML Markup Considerations in This Book, Glossary
  empty, using (SGML documents), Typing an SGML Document
  errors, Character Data Not Allowed Here
    misspelling, Misspelled Start Tag
    out of context, Out of Context Start Tag
  minimization, Typing an SGML Document
  omitting, Organization of Reference Pages
starting index terms (ranges), Marking index terms
Startref attribute, No #CONREF Attributes
Step element, Miscellaneous block elements
straight double quotes (attribute values), Typing an SGML Document
straight single quotes (attribute values), Typing an SGML Document
strings (characters), Attribute Types
StructField element, Programming languages and constructs
StructName element, Programming languages and constructs
structured markup, Structured and Semantic Markup
structured semantic markup language
  SGML
stylesheets, Glossary
  backends, supporting, The DSSSL Architecture
  configuration data, storing within, The DSSSL Architecture
  DTD extension, effects, Should You Do This?
  examples, Stylesheet Examples
  HTML and print, using single, A Single Stylesheet for Both Print and HTML
  installing modular (DocBook), Installing the ModularDocBook Stylesheets
  languages, A Survey of Stylesheet Languages
    DSSSL, Glossary
  publishing SGML/XML documents, Publishing DocBook Documents
  SGML documents, specifying appearance, Structured and Semantic Markup
SUBDOC entities, No SUBDOC or CDATA External Entities
Subject attribute, changes V4.0, DocBook V4.1 and DocBook XML V4.1.2
Subscript element, Mathematics
  DSSSL, processing, Processing subscripts and superscripts
subscripts and superscripts, Block Elements
subsets (DocBook DTD), If You Change DocBook, It's Not DocBook Anymore!
subsetting common attributes, Subsetting the Common Attributes
SubStep element, Miscellaneous block elements
Superscript element, Mathematics
  DSSSL, processing, Processing subscripts and superscripts
suppressing output (parser), Testing Your Work
Symbol element, Programming languages and constructs, General purpose
synopses, Block Elements
  elements (reference pages), Organization of Reference Pages
  reference topics, Making a Reference Page
  synopsis elements, removing, Removing Computer Inlines
Synopsis element, Line-specific environments
syntax
  content models, Understanding Content Models
  LISP language, Scheme
  Scheme language, Scheme
SysItem element (V4.0), DocBook V4.1 and DocBook XML V4.1.2
system identifiers, System Identifiers
  default, specifying, Catalog Files
  external subset, Glossary
  quotes, Catalog Files
  remapping with SYSTEM catalog directive, System Identifiers
  SGML, An Internal Subset, System Identifiers, Glossary
    example, Public Identifiers, System Identifiers, and Catalog Files
  XML, A Document Type Declaration, Glossary
    mapping for, Mapping System Identifiers for XML
    URI requirement, XML and SGML Markup Considerations in This Book
SYSTEM keyword, Catalog Files
SystemItem element, Operating systems
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
  Constant Class, removing (V5.0), DocBook 5.0
  subdividing into URL and email addresses, Elements and Attributes

### T

tabentry.mix element, editing, Removing Admonitions from Table Entries
Table element, Examples, figures, and tables
table entries, removing admonitions, Removing Admonitions from Table Entries
table models, DocBook Modules
tables, Block Elements
  DSSSL flow objects, Make expressions
  exclusions (DocBook), The DocBook DTD as XML
tables of contents, Books
  ToC
  creating, books and articles, Making Front- and Backmatter
tags, Glossary
  context errors, Out of Context Start Tag
  empty, Typing an SGML Document
  identifiers (SGML), Elements and Attributes
  minimization, Organization of Reference Pages
  names
    document type definition, Structured and Semantic Markup
    SGML declaration, An SGML Declaration
  namespaces (XML), Elements and Attributes
tail recursion (DSSSL), Loops
TC
  DocBook Technical Committee (OASIS)
tech.char.class parameter entity, Deciding How to Change a Customization Layer
  redefining, Removing Computer Inlines, DocBook V4.1 and DocBook XML V4.1.2
TEMP marked section (XML), Only Explicit CDATA-Marked Sections Are Allowed
tertiary level index entries, Marking index terms
testing
  customization layers (DocBook DTD), Testing Your Work
  DocBook installation, Testing Your Installation
  DSSSL stylesheets installation, Installing the ModularDocBook Stylesheets
  Jade, Testing Jade
text
  #PCDATA keyword, Understanding Content Models
  entity, declaring as, Internal general entities
  float, Glossary
  formatting, Structured and Semantic Markup
  inline elements, Inline Elements
  text class, Formal public identifiers
  text description, Formal public identifiers
text editors, Typing an XML Document
  SGML, entering, Typing an SGML Document
  unstructured, parsing and, Parsing DocBook Documents
text screen-captures , Line-specific environments
TextObject element, DocBook V3.1
Time program (xp parser), Using xp
Tip element, Admonitions
Title element, Meta-Information, Making a Reference Page
titles
  equation elements, Equations
  formal elements, Examples, figures, and tables
    errors, Out of Context Start Tag
  processing, DSSSL, Processing titles
  reference pages, Making a Reference Page
  top-level sections, Structured and Semantic Markup
ToC, Books
  changes, V4.0, DocBook V4.1 and DocBook XML V4.1.2
Token element, Programming languages and constructs, General purpose
top-level sections, Structured and Semantic Markup
Trademark element, Traditional publishing inlines
traditional publishing, inline elements, Traditional publishing inlines
trees (DSSSL), DSSSL Processing Model
troff markup (UNIX documentation), The HaL and O'Reilly era
true, testing for (DSSSL), Conditionals
tutorial, SGML Declaration, An SGML Declaration
Type element, Programming languages and constructs, General purpose
types (attributes), Attribute Types

### U

U.S. Department of Defense stylesheet standard, A Survey of Stylesheet Languages
ULink element, Cross references
uname command and uname function, distinguishing, Making a Reference Page
Unicode character set
  character numbers (XML), Special characters
  character numbers and reference glyphs, DocBook Character Entity Reference
  ISO standard entity sets and, Character and SDATA Entities
  Unicode Standard, Version 2.0 (online information), DocBook Character Entity Reference
  XML documents, using, Structured and Semantic Markup
Uniform Resource Indicators
  URI
Uniform Resource Locator
  URL
Uniform Resource Names
  URN
uniqueness
  ID attributes, Attribute Types
  public identifiers, Public Identifiers
UNIX
  DocBook DTD, development, The HaL and O'Reilly era
  manpage, Making a Reference Page
  ManVolNum, Making a Reference Page
unparsed entities, Entities, External general entities
unregistered public identifiers, Formal public identifiers
URI, Glossary
  XML system identifiers, A Document Type Declaration, Public Identifiers, System Identifiers, and Catalog Files, System Identifiers, Using Your Customization Layer, Glossary
URL, Glossary
  SGML system identifers, similarity to, Public Identifiers, System Identifiers, and Catalog Files
URN, Glossary
  XML system identifiers, future, Public Identifiers, System Identifiers, and Catalog Files, System Identifiers
user interfaces, describing (elements), User interfaces
UserInput element, Markup
UserLevel attribute, Common Attributes

### V

validation
  customization layers, Testing Your Work
  namespace tags (XML), problems, Elements and Attributes
  parsers, Parsing DocBook Documents
  SGML documents, Structured and Semantic Markup
VariableList element, Lists
variables (DSSSL)
  global, Global Variables and Side Effects
  let expressions, Let expressions
  local, defining after loop variable, Loops
VarName element, Programming languages and constructs, DocBook V3.1
Vendor attribute, Common Attributes
versions
  DocBook DTD, DocBook Versions
    future changes, Organization of Reference Pages
    V4.1, DocBook V4.1 and DocBook XML V4.1.2
    V5.0, DocBook 5.0
  DocBook XML DTD
    V4.1.2, DocBook V4.1 and DocBook XML V4.1.2
  nsgmls parser, printing number, Testing Your Work
  revision control, documents, Common Attributes
  XML, identifying, An XML Declaration
vi text editor, Typing an SGML Document
VideoObject element, DocBook V3.1
volume number (reference page), Making a Reference Page

### W

W3C (World Wide Web Consortium), Glossary
Warning element, Admonitions
warnings, listing, Testing Your Work
white papers, creating, Making an Article
whitespace
  catalog files, Catalog Files
  preserving in source text, Line-specific environments
word processors, SGML/XML vs., Structured and Semantic Markup
WordAsWord element, Markup
World Wide Web Consortium (W3C), Glossary
wrappers, Glossary
  meta-information, elements, Meta-Information
  sequences (DSSSL), Make expressions

### X

XML, Glossary
  basic concepts, Basic SGML/XML Concepts
  case sensitivity, Case-Sensitivity
  CSS, A Survey of Stylesheet Languages
  declarations, An XML Declaration
  DocBk XML DTD, DocBk XML
  DocBook and, DocBook and XML
  DocBook documents, creating, Making an XML Document
  DocBook DTD, converting to, The DocBook DTD as XML
  DocBook instances, converting to, DocBook Instances as XML
  DocBook version compliant with, The Davenport era, DocBook 5.0
  document type declaration, A Document Type Declaration
  document type declarations
    internal subset, An Internal Subset
  DSSSL stylesheets, Using Jade and DSSSL to Publish DocBook Documents
  external entities, restrictions, No SUBDOC or CDATA External Entities
  external file references, id, Public Identifiers, System Identifiers, and Catalog Files
  getting started, Getting Startedwith SGML/XML
  HTML and SGML vs., HTML and SGML vs. XML
  interoperability, SGML and XML, Typing an XML Document
  marked sections, Marked sections
  markup minimization
    SGML/XML compatibility
  namespaces, using, Elements and Attributes
  nsgmls parser, Using nsgmls
  parameter entities, Only Explicit CDATA-Marked Sections Are Allowed
  parsers, free, Parsing DocBook Documents
  processing instructions, XML and SGML Markup Considerations in This Book, Glossary
  public identifiers, Glossary
  question marks (?), processing instructions, Typing an XML Document
  resources, reference, Resources
  SDATA entities, not allowing, Character and SDATA Entities
  SGML, processing, DocBook and XML
  SGML/XML compatibility
    case sensitivity, attributes and elements, Typing an SGML Document
    empty tags, Typing an SGML Document
    markup minimizations, removing, Typing an SGML Document
    markup minization, problems, Typing an XML Document
    net tag minimization, Typing an SGML Document
    quotes, attribute values, Typing an SGML Document
  system identifiers, Glossary
    mapping, Mapping System Identifiers for XML
    URI requirements, Using Your Customization Layer
  Unicode character set, Structured and Semantic Markup
  XSL, A Survey of Stylesheet Languages
  XSL stylesheets, Structured and Semantic Markup, Glossary
xml.dcl declaration (nsgmls parser), Using nsgmls
xp parser, Parsing DocBook Documents, Using xp
XRef element, Cross references
XrefLabel attribute, Common Attributes
  removing, Subsetting the Common Attributes
XSL, A Survey of Stylesheet Languages, Glossary
XSL stylesheets, Structured and Semantic Markup
  example, XSL stylesheet

### Z

Zone attribute (indexterm), Marking index terms

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