%N grmovr %F $MIR/src/grmovr.f
%D Move pen (relative, world coordinates)
%B
      SUBROUTINE GRMOVR (DX,DY)

 GRPCKG: move the pen through a specified displacement.

 Arguments:

 DX, DY (real, input): the displacement in world coordinates: the pen
       position is incremented by DX in x and DY in y.
