(r5) TWikiVariablesQuickStart < TWiki

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---+ TWiki Variables Quickstart

%STARTINCLUDE%
TWiki Variables are names enclosed in percent signs that are that are expanded to some other text when the topic is displayed. For example, =%<nop>TOPIC%= is expanded to %TOPIC%. Some variables can take arguments in curly braces - for example, =%<nop>INCLUDE{"OtherTopic" ARG="arg"}%=.

Many TWiki variables are built-in, and others are predefined for your convenience. [[TWikiVariables]] describes how you can also define your own TWiki Variables at the entire site, individual web, or individual topic level. Variables are fully expanded _before_ any of the TWiki text formatting rules are applied.

*Commonly used variables:*

   * =%<nop>TOC%= : Automatically generates a [[VarTOC][table of contents]] based on headings in a topic - see the top of this page for an example.
   * =%<nop>WEB%= : The current web, is <b>%WEB%</b>.
   * =%<nop>TOPIC%= : The current topic name, is <b>%TOPIC%</b>.
   * =%<nop>ATTACHURL%= : The attachment URL of the current topic. Example usage: If you attach a file to a topic you can refer to it as =<b>%<nop>ATTACHURL%/image.gif</b>= to show the URL of the file or the image in your text.
   * =%<nop>INCLUDE{"SomeTopic"}%= : Server side include, [[VarINCLUDE][includes another topic]]. The current web is the default web. Example: =<b>%<nop>INCLUDE{"%SYSTEMWEB%.SiteMap"}%</b>=
   * =%<nop>SEARCH{"sushi"}%= : [[VarSEARCH][Inline search]] showing the search result embedded in a topic. FormattedSearch gives you control over formatting, used to create web-based applications.
   * [[TWikiDocGraphics][Documentation Graphics]]: There are many graphics available to use in your topics. Use =%<nop>ICON{"help"}%=, =%<nop>ICON{"tip"}%=, and =%<nop>ICON{"warning"}%= to get: %H%, %T%, and %X%, respectively.
   * *[[TWikiVariables][See all TWiki variables]]*.

%ICON{"tip"}% To "escape" a variable, prefix it with an exclamation mark. Write: =!%<nop>SOMEVARIABLE%= to get: !%SOMEVARIABLE%.
%STOPINCLUDE%

__Related Topics:__ UserDocumentationCategory, TWikiVariables, TWikiVariablesSearch, TextFormattingRules

Topic revision: r5 - 2009-11-25 - TWikiContributor

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