Noted by Nicholas Spies <ns11@voicenet.com>.
% XXX Need to define what ``initialize'' means here
The system maintains a table of modules that have been initialized,
-indexed by module name. This table table
+indexed by module name. This table is
accessible as \code{sys.modules}. When a module name is found in
this table, step (1) is finished. If not, a search for a module
definition is started. When a module is found, it is loaded. Details