Publishing pages are available only in publishing sites. In publishing sites, authors and approvers use the publishing feature to create content and then make it available for site visitors. Usually, a publishing site has an approval workflow enabled, so content is reviewed and approved prior to being published.
There is no tag wiki for this tag … yet!
Tag wikis help introduce newcomers to the tag. They contain an overview of the topic defined by the tag, along with guidelines on its usage.
All registered users may propose new tag wikis.
(Note that if you have less than 20000 reputation, your tag wiki will be peer reviewed before it is published.)