%N grdot0 %F $MIR/src/grdot0.f
%D Draw a dot
%B
      SUBROUTINE GRDOT0 (X,Y)

 GRPCKG (internal routine): Draw a single dot (pixel) at a specified
 location.

 Arguments:

 X, Y (real, input): absolute device coordinates of the dot (these
       are rounded to the nearest integer by GRDOT0).
