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: canlab_defaults.m
    path of file: ./repos/CanlabCore/CanlabCore/Misc_utilities
    
    the code of the file until where you have to start completion: function spm_defaults
% Sets the defaults which are used by SPM
%_______________________________________________________________________
%
% This file is intended to be customised for the site.
% Individual users can make copies which can be stored in their own
% matlab subdirectories. If ~/matlab is ahead of the SPM directory
% in the MATLABPATH, then the users own personal defaults are used.
%
% This function should not be called directly in any script or function
% (apart from SPM internals).
% To load the defaults, use spm('Defaults',modality).
% To get/set the defaults, use spm_get_defaults.
%
% Care must be taken when modifying this file.
%_______________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

% 
% $Id: spm_defaults.m 4860 2012-08-24 13:23:55Z volkmar $

%-Prevent users from making direct calls to this function
%-----------------------------------------------------------------------
persistent runonce
try
    if ~isdeployed && isempty(runonce)
        d = dbstack;
        if isempty(intersect({'spm','spm_get_defaults'},{d.name}))
            fprintf(['Direct calls to spm_defauts are deprecated.\n' ...
                'Please use spm(''Defaults'',modality) ' ...
                'or spm_get_defaults instead.\n']);
            runonce = 1;
        end
    end
end

global defaults

% Command Line Usage default
%=======================================================================
defaults.cmdline  = 0;


    
function spm_defaults
% Sets the defaults which are used by SPM
%_______________________________________________________________________
%
% This file is intended to be customised for the site.
% Individual users can make copies which can be stored in their own
% matlab subdirectories. If ~/matlab is ahead of the SPM directory
% in the MATLABPATH, then the users own personal defaults are used.
%
% This function should not be called directly in any script or function
% (apart from SPM internals).
% To load the defaults, use spm('Defaults',modality).
% To get/set the defaults, use spm_get_defaults.
%
% Care must be taken when modifying this file.
%_______________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

% 
% $Id: spm_defaults.m 4860 2012-08-24 13:23:55Z volkmar $

%-Prevent users from making direct calls to this function
%-----------------------------------------------------------------------
persistent runonce
try
    if ~isdeployed && isempty(runonce)
        d = dbstack;
        if isempty(intersect({'spm','spm_get_defaults'},{d.name}))
            fprintf(['Direct calls to spm_defauts are deprecated.\n' ...
                'Please use spm(''Defaults'',modality) ' ...
                'or spm_get_defaults instead.\n']);
            runonce = 1;
        end
    end
end

global defaults

% Command Line Usage default
%=======================================================================
defaults.cmdline  = 0;

% User Interface defaults
%=======================================================================
defaults.ui.print  = struct('opt',{{'-dpsc2','-append'}},'append',true,'ext','.ps');
defaults.ui.colour = [0.73 0.78 0.96];
defaults.rend