You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: gui_sc.m
    path of file: ./repos/fecgsyn/subfunctions/extraction-methods/libs/FastICA_25
    
    the code of the file until where you have to start completion: function gui_sc (action)
%
% This file is used by FASTICAG

% This file holds the callbacks for save-dialog

% @(#)$Id: gui_sc.m,v 1.3 2003/09/08 11:28:59 jarmo Exp $

    
function gui_sc (action)
%
% This file is used by FASTICAG

% This file holds the callbacks for save-dialog

% @(#)$Id: gui_sc.m,v 1.3 2003/09/08 11:28:59 jarmo Exp $

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Global variables

% Handle to the window
global hf_FastICA_Save;

% Handles to some of the controls in window
global he_FastICA_suffix;

% The needed main variables
global g_FastICA_ica_sig;
global g_FastICA_ica_A;
global g_FastICA_ica_W;
global g_FastICA_white_sig;
global g_FastICA_white_wm;
global g_FastICA_white_dwm;
global g_FastICA_pca_E;
global g_FastICA_pca_D;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This should not take long...
watchonInFigure = watchon;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
switch action
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
case 'Save'
 
 suffix = deblank(get(he_FastICA_suffix, 'String')); % The suffix for the variables

 fprintf('Saving results in variables in Matlab workspace.\n');
 assignin('base',['IC' suffix],g_FastICA_ica_sig);
 assignin('base',['A' suffix],g_FastICA_ica_A);
 assignin('base',['W' suffix],g_FastICA_ica_W);
 assignin('base',['whitesig' suffix],g_FastICA_white_sig);
 assignin('base',['whiteningMatrix' suffix],g_FastICA_white_wm);
 assignin('base',['dewhiteningMatrix' suffix],g_FastICA_white_dwm);
 assignin('base',['E' suffix],g_FastICA_pca_E);
 assignin('base',['D' suffix],g_FastICA_pca_D);

 close(hf_FastICA_Save);                  % close the dialog
 
 % Use return to avoid reaching the watchoff statement at the end