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Purpose : Read the DVR grid from dvr file and print it.
Usage   : rdgrid [ -f -i -s -oc -w -pop2 -pgrd -h -? ]  dof .

Options : 
 -f FILE: the DVR file is read from file FILE rather
          than from ./dvr .
          The string FILE may be a relative or full path-name.
 -i DIR : dvr file is read from directory DIR.
 -s     : Additional information is suppressed.
 -oc    : One-column output enforced.
 -w     : DVR weights are also printed.
 -pop2  : Grids of 2nd population are printed.
 -pgrd  : Momentum grid-points of a FFT are printed.
 -ver   : Version information about the program.
 -h     : Print this help text. 
 -?     : Print this help text. 

 The argument dof is the number of the degree of freedom for which
 the grid is printed.
 If no argument is given, the user is prompted for the missing argument.
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