%MLOCK Prevent M-file from being cleared.
%   MLOCK locks the currently running M-file in memory so that
%   subsequent CLEAR commands do not remove it.
%
%   Use the command MUNLOCK or MUNLOCK(FUN) to return the M-file to its
%   normal CLEAR-able state.
%
%   Locking an M-file in memory also prevents any PERSISTENT variables
%   defined in the file from getting reinitialized.
%
%   See also MUNLOCK, MISLOCKED, PERSISTENT.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 1.4 $  $Date: 1998/06/26 19:05:07 $
%   Built-in function.
