ACL or Access Control List. According to Wikipedia, “An ACL specifies which users or system processes are granted access to objects, as well as what operations are allowed to be performed on given objects.” In the case of Joomla we have two separate aspects to ACL:
- Which users can gain access to what parts of the website? For example, will a given menu choice be visible for a given user?
- What operations (or actions) can a user perform on any given object? For example, can a user submit or edit an article?
The implementation of ACL in Joomla was substantially changed in the 2.5 series (including 1.6 and 1.7).
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