Description
A ProgramListing is a verbatim environment for program source or source fragment listings. ProgramListings are often placed in Examples or Figures so that they can be cross-referenced from the text.
Processing Expectations
Formatted as a displayed block. This element is displayed "verbatim"; whitespace and linebreaks within this element are significant. ProgramListings are usually displayed in a fixed width font.
Other markup within a ProgramListing is recognized. Contrast this with systems like LaTeX, in which verbatim environments disable markup recognition. If you want to disable markup recognition, you must use a CDATA section:
<programlisting> <![CDATA[ This is a programlisting so white space and line breaks are significant. But it is also a CDATA section so <emphasis>tags</emphasis> and &entities; are not recognized. The only markup that is recognized is the end-of-section marker, which is two "]"'s in a row followed by a >. ]]> </programlisting>
Two markup tags have special significance in ProgramListings: CO and LineAnnotation. A CO identifies the location of a Callout. A LineAnnotation is a comment, added by the documentor--not the programmer.
Processing expectations
This element is displayed "verbatim"; whitespace and linebreaks within this element are significant.
Future Changes
The InterfaceDefinition element will be discarded in DocBook V4.0. It will no longer be available in the content model of this element.
Parents
These elements contain ProgramListing: Answer, Appendix, Article, BiblioDiv, Bibliography, BlockQuote, Callout, Caption, Caution, Chapter, Colophon, Dedication, entry, Example, Figure, Footnote, Glossary, GlossDef, GlossDiv, Important, Index, IndexDiv, InformalExample, InformalFigure, LegalNotice, ListItem, MsgExplan, MsgText, Note, Para, PartIntro, Preface, Procedure, ProgramListingCO, QandADiv, QandASet, Question, RefSect1, RefSect2, RefSect3, RefSynopsisDiv, Sect1, Sect2, Sect3, Sect4, Sect5, Section, SetIndex, Sidebar, SimpleSect, Step, TextObject, Tip, Warning.
Children
The following elements occur in ProgramListing: Abbrev, Acronym, Action, Anchor, Application, Author, AuthorInitials, Citation, CiteRefEntry, CiteTitle, ClassName, CmdSynopsis, CO, Command, Comment, ComputerOutput, Constant, CorpAuthor, Database, Email, Emphasis, EnVar, ErrorCode, ErrorName, ErrorType, Filename, FirstTerm, Footnote, FootnoteRef, ForeignPhrase, FuncSynopsis, Function, GlossTerm, GUIButton, GUIIcon, GUILabel, GUIMenu, GUIMenuItem, GUISubmenu, Hardware, IndexTerm, InlineEquation, InlineGraphic, InlineMediaObject, Interface, InterfaceDefinition, KeyCap, KeyCode, KeyCombo, KeySym, LineAnnotation, Link, Literal, Markup, MediaLabel, MenuChoice, ModeSpec, MouseButton, MsgText, OLink, Option, Optional, OtherCredit, Parameter, Phrase, ProductName, ProductNumber, Prompt, Property, Quote, Replaceable, ReturnValue, RevHistory, SGMLTag, StructField, StructName, Subscript, Superscript, Symbol, Synopsis, SystemItem, Token, Trademark, Type, ULink, UserInput, VarName, WordAsWord, XRef.
In some contexts, the following elements are allowed anywhere: BeginPage, IndexTerm.
In some contexts, the following elements are excluded: Acronym, Footnote, IndexTerm.
