JSPWiki has many variables, that can be inserted on pages on-the-fly. See [TextFormattingRules] how it's done.
!applicationname
This is the name of this Wiki. It has been set by the administrator in "jspwiki.properties". This Wiki is called ''[{$applicationname}]''.
!baseurl
The base URL address for this wiki.
!encoding
Describes the character encoding used in this Wiki. An encoding of "UTF-8" means that the Wiki accepts any character, including Chinese, Japanese, etc. Encoding "ISO-8859-1" means that only western languages are supported. This wiki uses the ''[{$encoding}]'' encoding.
!inlinedimages
Lets you know which image types are being inlined.
!interwikilinks
Writes HTML code for supported InterWiki links.
!jspwikiversion
Inserts the version number of the JSPWiki engine. For example, this version is ''[{$jspwikiversion}]''.
!uptime
Inserts the amount of time since this Wiki has been last restarted. This wiki has been up for ''[{$uptime}]''.
!pagename
Inserts the current page name. Example: This page is called ''[{$pagename}]''.
!pageprovider
The current PageProvider.
!pageproviderdescription
A verbose, HTML description about the currently used page provider.
!totalpages
The total number of pages available in this Wiki.
!Inserting JSPWiki properties
You can also access some of the JSPWiki properties (that have been defined by the site maintainer) by using their property names directly. See [SystemInfo] for an example.
Note that some properties might not be accessible due to security reasons.