function putl(fid,ln);
%   function putl(fid,ln);
%   puts a string (ln) on the file with file id fid
%   assumes that ln does not included backslashes
%
%  PC VERSION

% copyright, 1996, William F. Sharpe
% wfsharpe@leland.stanford.edu
% this version Jan. 15, 1996

ln = [ln '\r\n'];
fprintf(fid,ln);