IMJM

     IMJM sets the number of grid points for workstation eta in
     the N-S and E-W direction where,

		IMJM = IM;JM

     IM and JM are the number of grid points over the computational 
     domain domain where:                
                                                                         
        IM is the number of grid points in the E-W (roughly) direction   
        JM is the number of grid points in the N-S (roughly) direction   
                                                                         
     IMPORTANT:  The horizontal grid dimensions MUST be an ODD integer!  
                                                                         
     BINARY DISTRIBUTION USERS: The IM and JM values must be set to the  
     dimensions of your compiled distribution. LM should be 45.

     For a grid with 71 grid points in the E-W and 121 points in the
     N-S direction:

               IMJM = 71;121

     Note that during creating on the Arakawa-E grid the IM dimension
     becomes IM*2-1.  This is the value that is used in etamap for
     display of the workstation Eta computational domain.