TWiki Site-Level Preferences

The following are site-level settings that affect all users in all webs on this TWikiSite. They can be selectively overwritten on the individual web level (see WebPreferences in each web), and on the user level (create preferences in your user account topic in the Main web, ex: TWikiGuest).

  • ALERT! NOTE: You can lock individual settings at the site or web levels using User & Group Access Control - see section below.

Web Preferences

ALERT! NOTE: They are typically redefined in individual WebPreferences topics

  • List of selected topics in a web - the second line of the upper toolbar (usually overwritten in individual WebPreferences):

  • Web specific background color: (is overwritten by web preferences)
    • Set WEBBGCOLOR = #C0C0C0

  • Copyright notice:
    • Set WEBCOPYRIGHT = Copyright © 1999-2003 by the contributing authors. \nAll material on this collaboration platform is the property of the contributing authors.
      \nIdeas, requests, problems regarding TWiki? Send feedback.

  • Exclude web from a web="all" search: (Set to on for hidden webs; is overwritten by web preferences)

  • Prevent automatic linking of WikiWords and acronyms (if set to on); link WikiWords (if empty); can be overwritten by web preferences:
    • Set NOAUTOLINK =
    • Note: Use the [[...][...]] syntax to link topics in case you disabled WikiWord linking. The <noautolink> ... </noautolink> syntax can be used to prevents links within a block of text.

  • Warn if %INCLUDE{}% of topic fails: Fail silently (if empty or off); output "Warning: Can't INCLUDE Topic, topic not found" (if set to on); else, output specific text (use $topic for topic). You can override this setting by web preferences and by a warn="..." parameter in %INCLUDE{}% :
    • Set INCLUDEWARNING = Note: Included topic $topic does not exist yet

User Settings

ALERT! NOTE: They are typically redefined in topics of individual TWikiUsers

  • Horizontal size of text edit box: (can be overwritten by user preferences)
    • Set EDITBOXWIDTH = 70

  • Vertical size of text edit box: (can be overwritten by user preferences)
    • Set EDITBOXHEIGHT = 15

  • Style of text edit box. Set to width: 99% for full window width (default; this will overwrite the EDITBOXWIDTH setting), or width: auto to disable. This setting works for IE and some other recent browsers. (can be overwritten by user preferences)
    • Set EDITBOXSTYLE = width: 99%

  • Default state of the Release edit lock (UnlockTopic) check box in preview. Checkbox is initially checked if Set RELEASEEDITLOCKCHECKBOX = checked="checked", or unchecked if empty. If checked, make sure to click on Edit to do more changes; do not go back in your browser to the edit page, or you risk that someone else will edit the topic at the same time: (can be overwritten by user preferences)

  • Default state of the Minor Changes, Don't Notify (DontNotify) check box in preview. Check box is initially checked if Set DONTNOTIFYCHECKBOX = checked="checked", or unchecked if empty: (can be overwritten by user preferences)

  • Default state of the link check box in the attach file page. Checkbox is initially checked if Set ATTACHLINKBOX = checked="checked", or unchecked if empty (Set ATTACHLINKBOX =). If checked, a link is created to the attached file at the end of the topic: (can be overwritten by user preferences)

  • Format of file link when the link check box is checked: (can be overwritten by user preferences)
    • HELP NOTE: Keyword $name gets expanded to filename; $comment to comment; \t to tab (3 spaces for bullets).
    • Set ATTACHEDFILELINKFORMAT = \t* $name: $comment

  • Format of images when the link check box is checked: (can be overwritten by user preferences)
    • HELP NOTE: Keyword $name gets expanded to filename; $comment to comment; $size to width="..." height="..." attribute of img tag; \t to tab (3 spaces for bullets).
      * Set ATTACHEDIMAGEFORMAT = \t* $comment: <br />
        <img src="%ATTACHURLPATH%/$name" alt="$name" $size />

TWiki Platform Settings

  • TWiki platform name:
    • Set WIKITOOLNAME = TWikibeta

  • Image, URL and alternate tooltip text of TWiki logo: (can be overwritten by web preferences)

  • List of TWiki webs - on the first line of the upper toolbar (to add a new web, see ManagingWebs and SiteMap):
    • Set WIKIWEBLIST = Main  |  TWiki  |  Know  |  Sandbox
    • TIP NOTE: To automatically list all non-hidden webs in alphabetical order, use the %WEBLIST{}% variable instead:
      Sandbox  |  TNTgroup  |  TWiki

  • Skin overriding the default TWiki templates: (can be overwritten by WebPreferences and user preferences)
    • Set SKIN =

  • Broadcast message for skins supporting a %BROADCASTMESSAGE% at the top of the page: (IMPORTANT: Set to empty message if not used; #Comment out unused messages)
      NOTE: Edit and Attach will be disabled today between 05:00 PM and 06:00 PM PDT (00:00 to 01:00 GMT) for a scheduled TWiki maintenance.

Email and Proxy Server Settings

  • TWiki webmaster name (first name and last name, e.g. Fred Smith):
    • Set WIKIWEBMASTERNAME = TWiki Webmaster

  • Mail host for outgoing mail. This is used for WebChangesAlert if Perl module Net::SMTP is installed. If not, or if SMTPMAILHOST is empty, the external sendmail program is used instead (defined by $mailProgram in TWiki.cfg). Examples: or localhost
    • Set SMTPMAILHOST = mail

  • Mail domain sending mail. SMTP requires that you identify the TWiki server sending mail. If not set, Net::SMTP will guess it for you. Ex:

  • Proxy Server. Some environments require outbound HTTP traffic to go through a proxy server. Set the host in PROXYHOST (example:, and the port number in PROXYPORT (example: 8080). No proxy is used if PROXYHOST or PROXYPORT is empty.
    • Set PROXYHOST =
    • Set PROXYPORT =

Email Link Settings

  • 'Mail this topic' mailto: link - can be included in topics, templates or skins

  • 'Mail this topic' link text
    • Set MAILTHISTOPICTEXT = Send a link to this page

Plugins Settings


  • http-equiv meta tags for view, rdiff, attach, search* scripts:
      * Set HTTP_EQUIV_ON_VIEW = 

  • http-equiv meta tags for edit script. Example, to expire immediately:
    Set HTTP_EQUIV_ON_EDIT = <meta http-equiv="Expires" content="%GMTIME{"$day $month $year $hour:$min:$sec"}% GMT">
      * Set HTTP_EQUIV_ON_EDIT = 

  • http-equiv meta tags for preview script:

Miscellaneous Settings

  • Line break:
    • Set BR =

  • Bullet sign:
    • Set BULLET = •

  • Line break and bullet: (useful in table cells)
    • Set BB =

  • Colored text: (see more StandardColors)
    You type: %RED% red text %ENDCOLOR% and %GREEN% green text %ENDCOLOR%
    You get: red text and green text
    • Note: %<color>% text must end with %ENDCOLOR% . If you want to switch from one color to another one you first need to end the active color with %ENDCOLOR%, e.g. write %RED% some text %ENDCOLOR% %GREEN% more text %ENDCOLOR%.
    • Set YELLOW =
      • YELLOW looks like this
    • Set ORANGE =
      • ORANGE looks like this
    • Set RED =
      • RED looks like this
    • Set PINK =
      • PINK looks like this
    • Set PURPLE =
      • PURPLE looks like this
    • Set TEAL =
      • TEAL looks like this
    • Set NAVY =
      • NAVY looks like this
    • Set BLUE =
      • BLUE looks like this
    • Set AQUA =
      • AQUA looks like this
    • Set LIME =
      • LIME looks like this
    • Set GREEN =
      • GREEN looks like this
    • Set OLIVE =
      • OLIVE looks like this
    • Set MAROON =
      • MAROON looks like this
    • Set BLACK =
      • BLACK looks like this
    • Set GRAY =
      • GRAY looks like this
    • Set SILVER =
      • SILVER looks like this
    • Set WHITE =
      • WHITE looks like this
    • And finally:
    • Set ENDCOLOR =
      • To finish colored text

  • Graphics used in TWiki documentation - view all images in TWikiDocGraphics. (There are various ways to set up common icons as text variables. This is simply one quick approach.):
    • Set H = HELP
    • Set I = IDEA!
    • Set M = MOVED TO...
    • Set N = NEW
    • Set P = REFACTOR
    • Set Q = QUESTION?
    • Set S = PICK
    • Set T = TIP
    • Set U = UPDATED
    • Set X = ALERT!
    • Set Y = DONE

  • Background color of non existing topic: ( default cornsilk or #FFFFCE )

  • Font color of non existing topic: ( default #0000FF )

  • PreviewBackground image:
    • Set PREVIEWBGIMAGE = /twiki/pub/TWiki/PreviewBackground/preview2bg.gif

Access Control Settings

  • Users or groups allowed to change or rename this TWikiPreferences topic: (ex: TWikiAdminGroup)

  • Site-level preferences that are not allowed to be overridden by WebPreferences and user preferences:

Creating New Preference Variables

You can introduce new VARIABLES and use them in your topics and templates. There is no need to change the TWiki engine (Perl scripts).

  • A preference is defined in a TWikiShorthand bullet item: [3 spaces] * [space] Set NAME = value
    Example (as a nested bullet item, indented 6 spaces):
  • Preferences are used as TWikiVariables by enclosing the name in percent signs: %. Example:
    • When you write variable %WEBBGCOLOR%, it gets expanded to #FFD8AA .

  • ALERT! The sequential order of the preference settings is significant. Define preferences that use other preferences FIRST. For example, set WEBCOPYRIGHT before WIKIWEBMASTER since the copyright notice uses the webmaster email address.

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Topic revision: r55 - 2003-12-12 - PeterThoeny
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