error occurred, or one of the hooks handled the action already). Checking the
return value matters more for "before" hooks than for "complete" hooks.
-Hooks::run() was added in MediaWiki 1.18, before that the global function
-wfRunHooks must be used, which was deprecated in MediaWiki 1.25.
-
Note that hook parameters are passed in an array; this is a necessary
-inconvenience to make it possible to pass reference values (that can be changed)
-into the hook code. Also note that earlier versions of wfRunHooks took a
-variable number of arguments; the array calling protocol came about after
-MediaWiki 1.4rc1.
+inconvenience to make it possible to pass reference values (which can be changed)
+by the hook callback.
==Events and parameters==