lxpatt

	LXPATT(pattrn.i2.r, patsiz.i2.r)

	This routine determines the pattern of vectors and arcs generated by
	future calls to the LX color graphics routines LXVEC and LXCVEC.
	PATTRN is a 16-bit integer which specifies the pattern.  The high
	order 4 bits define the length of the pattern (0 for a solid line).
	The low order 12 bits describe the pattern, with the high order bit
	being used first.  PATSIZ is a 16-bit integer which defines the
	number of replications of each bit in the pattern.  Pixels associated
	with a pattern bit value of 1 are displayed normally.  Pixels
	associated with a pattern bit value of 0 are skipped completely.  They
	are neither set nor cleared.  After a call to LXRST the pattern will be
	set to a solid line.