class CGI::Session::MemoryStore

def initialize(session, option=nil)

currently recognized.
+option+ is a list of initialisation options. None are
+session+ is the session this instance is associated with.

Create a new MemoryStore instance. 
def initialize(session, option=nil)
  @session_id = session.session_id
  unless GLOBAL_HASH_TABLE.key?(@session_id)
    unless session.new_session
      raise CGI::Session::NoSession, "uninitialized session"
    end
    GLOBAL_HASH_TABLE[@session_id] = {}
  end
end