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{{{{SITENAME}}/Help}}
'''ACL''' stands for "[[wikipedia:Access control list|Access Control List]]". 

On {{SITENAME}}, ACLs are currently used for both:
* [[{{SITENAME}}:Folder-Based Access Restrictions]] 
* [[{{SITENAME}}:Category-Based Access Restrictions]]

==ACL Page Names==
The following table indicates the names of the ACL pages governing different types of access privileges to pages with names containing a "/". 

Please note that:
* the ACL pages for a folder named FOLDER have names of the form "FOLDER/PRIVILEGE:";
* the ACL page named "FOLDER/PRIVILEGE:" does not affect access to the page FOLDER itself.


{| class=wikitable
! Name of ACL page !! Comment
|-
|  FOLDER/read: || Affects read-access to all pages with names beginning with FOLDER/
|-
|  FOLDER/edit: || Affects write-access to all pages with names beginning with FOLDER/
|-
|  FOLDER/protect: || Affects who can protect pages with names beginning with FOLDER/
|-
| FOLDER/Restricted: || Affects read-access to FOLDER/ pages tagged <nowiki>[[Category:Restricted]]</nowiki>
|-
| FOLDER/Protected: || Affects write-access to FOLDER/ pages tagged <nowiki>[[Category:Protected]]</nowiki>
|-
|}

==Efficacy==
An ACL page is only effective if it is protected, which requires administrative permissions. If you would like to have an ACL page protected, please send {{EMAIL AN ADMIN}}.


{{information|For information about how to prevent the search engine from displaying search snippets of pages to which
read-access has been restricted using ACLs, see [[Help:Snippets]].}}

==Format==
The userids appearing in the lists of privileged users must be capitalized exactly as they appear on the [[Special:Listusers]] page. In most cases, this simply means writing ''Userid'' rather than ''userid''. Spaces must be replaced by underscores, e.g. ''Qed_userid''. White space (space, tabs, newlines) may be used freely between userids.

On an ACL page, all characters after the first left square bracket or equals sign are ignored.

==Logic==
* "can edit" implies "can read"
:: i.e. every userid on a protected FOLDER/edit: page is implicitly on the FOLDER/read: page.
* "can protect" implies "can edit"
:: i.e. every userid on a protected FOLDER/protect: page is implicitly on both the FOLDER/edit: and FOLDER/read: pages.


{{information|<br>In general, if an id is on the ''edit:'' page of a folder, there is no need to add it to the ''read:'' page.}}

==Restricting to Princeton netids==
To grant access to all Princeton netids, add @princeton.edu to the access control list. This can be used to exclude 
"[[Help:Guest Accounts|guests]]".

==See also==
* [[Help:Folder administration]]
* [[Help:Restrictions]]
* [[Help:Editing_permissions]]

[[Category:Administration]]
[[Category:Security]]
<!-- keywords: course administration administrator member new netid group -->

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