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: nex_marker.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/external/fieldtrip/private
    
    the code of the file until where you have to start completion: function [n, nm, nl, ts, names, m] = nex_marker(filename, varname)
% nex_marker(filename, varname): Read a marker variable from a .nex file
%
% [n, nm, nl, ts, names, m] = nex_marker(filename, varname)

    
function [n, nm, nl, ts, names, m] = nex_marker(filename, varname)
% nex_marker(filename, varname): Read a marker variable from a .nex file
%
% [n, nm, nl, ts, names, m] = nex_marker(filename, varname)
%
% INPUT:
%   filename - if empty string, will use File Open dialog
%   varname - variable name
%
%           continuous (a/d) data come in fragments. Each fragment has a timestamp
%           and a number of a/d data points. The timestamp corresponds to
%           the time of recording of the first a/d value in this fragment.
%           All the data values stored in the vector d. 
% OUTPUT:
%   n - number of markers
%   nm - number of fields in each marker
%   nl - number of characters in each marker field
%   ts - array of marker timestamps (in seconds)
%   names - names of marker fields ([nm 64] character array)
%   m - character array of marker values [n nl nm]

% original from Plexon, download from http://www.plexoninc.com (8/4/02)
% modifications by Robert Oostenveld
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
%    FieldTrip is free software: you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation, either version 3 of the License, or
%    (at your option) any later version.
%
%    FieldTrip is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.
%
%    You should have received a copy of the GNU General Public License
%    along with FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id: nex_marker.m 7123 2012-12-06 21:21:38Z roboos $

n = 0;
nm = 0;
nl = 0;
ts = 0;
m = 0;
names = 0;

if(nargin ~= 2)
   disp('2 input arguments are required')
   return
end