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Version: DocBook V4.5

systemitem

systemitem — A system-related item or term

Synopsis​

Mixed Content Model​

systemitem ::=
(#PCDATA|link|olink|ulink|action|application|classname|methodname|
 interfacename|exceptionname|ooclass|oointerface|ooexception|
 package|command|computeroutput|database|email|envar|errorcode|
 errorname|errortype|errortext|filename|function|guibutton|
 guiicon|guilabel|guimenu|guimenuitem|guisubmenu|hardware|
 interface|keycap|keycode|keycombo|keysym|literal|code|constant|
 markup|medialabel|menuchoice|mousebutton|option|optional|
 parameter|prompt|property|replaceable|returnvalue|sgmltag|
 structfield|structname|symbol|systemitem|uri|token|type|
 userinput|varname|nonterminal|anchor|remark|subscript|
 superscript|inlinegraphic|inlinemediaobject|indexterm|beginpage|
 acronym|co)*

Attributes​

Common attributes

Name

Type

Default

moreinfo

Enumeration:

none

refentry

"none"

class

Enumeration:

constant

daemon

domainname

etheraddress

event

eventhandler

filesystem

fqdomainname

groupname

ipaddress

library

macro

netmask

newsgroup

osname

process

protocol

resource

server

service

systemname

username

None

Description​

A SystemItem identifies any system-related item or term. The Class attribute defines a number of common system-related terms.

Many inline elements in DocBook are, in fact, system-related. Some of the objects identified by the Class attribute on SystemItem may eventually migrate out to be inline elements of their own accord…and vice versa.

Processing expectations​

Formatted inline. The MoreInfo attribute can help generate a link or query to retrieve additional information.

Future Changes​

In DocBook V4.0, the content model of SystemItem will be constrained to (#PCDATA | Replaceable | InlineGraphic).

Also, the EnvironVar and Prompt values of Class will be discarded (use EnVar and Prompt instead).

Future Changes​

The register class value will be added to support CPU registers. The constant class value will be removed.

Parents​

These elements contain systemitem: action, application, attribution, bibliomisc, bridgehead, citation, citetitle, classsynopsisinfo, code, command, computeroutput, database, emphasis, entry, filename, firstterm, foreignphrase, funcparams, funcsynopsisinfo, function, glosssee, glossseealso, glossterm, hardware, interfacename, keycap, lineannotation, link, literal, literallayout, lotentry, member, msgaud, olink, option, optional, para, parameter, phrase, primary, primaryie, productname, programlisting, property, quote, refdescriptor, refentrytitle, refname, refpurpose, remark, screen, screeninfo, secondary, secondaryie, see, seealso, seealsoie, seeie, seg, segtitle, simpara, subtitle, synopsis, systemitem, td, term, termdef, tertiary, tertiaryie, th, title, titleabbrev, tocback, tocentry, tocfront, trademark, ulink, userinput.

Children​

The following elements occur in systemitem: acronym, action, anchor, application, beginpage, classname, co, code, command, computeroutput, constant, database, email, envar, errorcode, errorname, errortext, errortype, exceptionname, filename, function, guibutton, guiicon, guilabel, guimenu, guimenuitem, guisubmenu, hardware, indexterm, inlinegraphic, inlinemediaobject, interface, interfacename, keycap, keycode, keycombo, keysym, link, literal, markup, medialabel, menuchoice, methodname, mousebutton, nonterminal, olink, ooclass, ooexception, oointerface, option, optional, package, parameter, prompt, property, remark, replaceable, returnvalue, sgmltag, structfield, structname, subscript, superscript, symbol, systemitem, token, type, ulink, uri, userinput, varname.

Attributes​

class

Class indicates the type of SystemItem.

moreinfo

If MoreInfo is set to RefEntry, it implies that a RefEntry exists which further describes the SystemItem.

See Also​

computeroutput, envar, filename, prompt, userinput.

Examples​

<!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<para>
For many years, O'Reilly's primary web server, 
<ulink url="http://www.oreilly.com/">http://www.oreilly.com/</ulink>,
was hosted by <application>WN</application> on
<systemitem class="systemname">helio.oreilly.com</systemitem>.
</para>

For many years, O'Reilly's primary web server, http://www.oreilly.com/, was hosted by WN on helio.oreilly.com.

For additional examples, see also part.