%EXIST	Check if variables or functions exist.
%	EXIST('A') returns:
%	  0 if A does not exist
%	  1 if A is a variable in the workspace
%	  2 if A is an M-file on MATLAB's search path
%	  3 if A is a MEX-file on MATLAB's search path
%	  4 if A is a compiled SIMULINK function
%	  5 if A is a built-in MATLAB function
%
%	Note: EXIST('A') also returns 2 if a file named
%	just 'A' is on MATLAB's search path.

%	Copyright (c) 1984-94 by The MathWorks, Inc.
%	Built-in function.
