%REHASH  Refresh function and file system caches.
%   REHASH, with no inputs, performs the same refresh that is done at
%   the MATLAB prompt.  It reloads changed directories, refreshes the
%   list of known classes, and checks the loaded function timestamps.
%
%   REHASH PATH is the same as REHASH except that it unconditionally
%   reloads all non-toolbox directories.  This is exactly the same
%   as the behavior of PATH(PATH).
%
%   REHASH TOOLBOX is the same as REHASH PATH except that it
%   unconditionally reloads all directories, including all toolbox
%   directories.
%
%   REHASH PATHRESET is the same as REHASH PATH except that it also
%   forces any shadowed functions to be replaced by any shadowing functions.
%
%   REHASH TOOLBOXRESET is the same as REHASH TOOLBOX except that it also
%   forces any shadowed functions to be replaced by any shadowing functions.
%   This is like exiting and restarting MATLAB.
%
%   REHASH TOOLBOXCACHE will write a new toolbox cache in toolbox/local,
%   replacing any existing toolbox cache.  Write access to toolbox/local
%   is required to utilize this option.
%
%   See also PATH, ADDPATH, RMPATH.

%   CGN, August 1997

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 1.8 $  $Date: 2000/06/08 21:18:26 $

%   Built-in function.
