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 Purpose: To (selectively) write out natorbs or spf's.
 Usage  : rdspfs [-f -i -rst -o  -n -w -nw -nofs -ver -h -?]  [mx sx x] .

Options  : 
 -f FILE : The wavefunction is read from file FILE rather than from ./psi
           The string FILE may be a relative or a full path-name.
 -i DIR  : Use DIR as name directory.
 -rst    : the restart file is read, rather than the psi file.
 -o FILE : The output is written to file FILE*_f* rather than
           to ./spf*_f*
           The string FILE may be a relative or a full path-name.
           If FILE=no, i.e. "-o no", no output-file will be opened.
 -nofs   : No transformation to fs. Use when 'time-not-fs' was set in mctdh.
 -nw     : DVR weights are not removed, i.e. they are included in the functions  .
 -n step : Write only every step.
 -w      : An existing output file is overwritten.
 -h      : Print this help text. 
 -?      : Print this help text. 
 -ver    : Version information about the program 

 The arguments select the spf (x), mode (mx) and state (sx) 
 Replace x by appropriate number, any order is allowed.
 If no argument is given, the user is prompted for the missing argument.
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