used variables

Variables in ewiki often have similar names, and are also
regularily passed by reference from one function to another (so it
is in fact the same variable).

$id         - Is often the name of the current page (which is to be
              returned as output. The content of this variable is
              also available via the global $ewiki_id [[for plugins
              that do not have the common ($id,$data,$action)
              interface parameters]].

$data       - Contains the entry fetched with the initial
              ewiki_database() call. This is an array of the form:
              array(
                 "id" => "CurrentPageName+",
                 "version" => 1,               # 1 is the lowest possible
                 "flags" => 1,
                 "created" => 1002056301,
                 "lastmodified" => 1002171711,
                 "hits" => 235,
                 "author" => "localhost (127.0.0.1:4981),
                 "meta" => array("Http-Header"=>"X", "setting"=>"val"),
                 "content" => "wiki source...",
              )

$action     - The $action with wich the current page was requested
              (most often "view", but everybody also knows "edit").

$uu         - Short for "unused". Is used as temporary variable, especially
              with preg_match() and string functions.

$result     - Used for database queries SEARCH and GETALL.

$row        - Holds temporarily fetched entries from the databases
              (like $data), if page lists are to be generated.



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