status.i4.v = wn_vector_grain(separation.i4.r, multiplier.i4.r)

	status.i4.v = wn_vector_grain_c(separation.i4.v, multiplier.i4.v)

	This routine sets the grain (dot or dash pattern) for vectors
	drawn by future calls to the "wn_xxx" graphics routines.

	separation	number of pixels between displayed pixels
			(WN_SOLID_LINE will give solid vectors)
	multiplier	pattern multiplier which allows the dots to
			be stretched into dashes

	This function returns ACNET status values as follows:

	OK			success
	CBS_INVARG		invalid separation count

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	wn_vector(_c), wn_polygon_c, wn_vector_width(_c), wn_wide_vector_c,

	C/C++ usage:

	int	status;
	int	separation = WN_SOLID_LINE;
	int	multiplier = 1;

	status = wn_vector_grain_c(separation,multiplier);