## Help on Preferences
- A preference setting is defined by:
`3 or 6 spaces * Set NAME = value`
Example:
- Set WEBBGCOLOR = #FFFFC0
- A preferences setting can be disabled with a # sign. Remove the # sign to enable a local customisation. Example:%BR%
- #Set DENYWEBCHANGE = %USERSWEB%.UnknownUser
- Preferences are used as %SYSTEMWEB%.TWikiVariables by enclosing the name in percent signs. Example:
- When you write variable `%WEBBGCOLOR%` , it gets expanded to `%WEBBGCOLOR%`
- The sequential order of the preference settings is significant. Define preferences that use other preferences first, i.e. set `WEBCOPYRIGHT` before `WIKIWEBMASTER` since `%WEBCOPYRIGHT%` uses the `%WIKIWEBMASTER%` variable.
- You can introduce your own preferences variables and use them in your topics and templates.
## Related Topics
- [[%SYSTEMWEB%.TWikiPreferences|SYSTEMWEB/TWikiPreferences]], [[Main.TWikiPreferences|Main/TWikiPreferences]] - site-level preferences
- %USERSWEB%.TWikiUsers - list of user topics. User topics can have optional user preferences
- %SYSTEMWEB%.TWikiVariables - list of common `%VARIABLES%`
- %SYSTEMWEB%.TWikiAccessControl - explains how to restrict access by users or groups
## Tools