%WIKITOOLNAME% allows to define some restrictions of who is allowed to make changes and attach files to topics.
-**IMPORTANT NOTE:** Is is recommended to use the access control feature only if absolutely necessary because it goes against the free [[WikiCulture]], where everybody is invited to contribute to any topic.
+**IMPORTANT NOTE:** Think twice before restricting write access to a web or a topic, because an open system where everybody can contribute is the essence of the [[WikiCulture]]. Experience shows that unrestricted write access works very well because:
+
+- There is enough peer pressure to post only conform content.
+- Content does not get lost because topics are under revision control.
+- A topic revision can be undone by a member of the [[TWikiAdminGroup]] in case needed.
**_Users and Groups_**
- DENYTOPICCHANGE (in topic) overrides DENYWEBCHANGE (in WebPreferences)
- ALLOWTOPICCHANGE (in topic) overrides ALLOWWEBCHANGE (in WebPreferences)
-**_Related topics:_** [[TWikiPreferences]], [[WebPreferences]] (in every web), [[TWikiAdminGroup]]
+**_Related topics:_** [[TWikiPreferences]], [[WebPreferences]] (in every web), [[TWikiAdminGroup]], [[TWikiGroups]]
-- [[PeterThoeny]] - 28 Oct 2000 <br />