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 Purpose: Converts a restart-file to psi-file format

 Usage  : rst2psi [-f -o -w  -ver -h -?]  step

Options : 
 -f FILE: The restart is read from file FILE rather than from ./restart
          The string FILE may be a relative or a full path-name.
 -o DIR : The output is written to file FILE rather than to ./psi
 -w     : An existing output file is overwritten.
 -ver   : Version information about the program 
 -h     : Print this help text. 
 -?     : Print this help text. 
     To receive some information on the restart file, run "rst2psi 0 "
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