MARKER

     MARKER specifies the marker color, type, size, line width and
     hardware/software flag separated by slashes:

		marker color / marker type / size / width / hw flag

     If the marker color is 0, no markers will be drawn.  If the marker 
     color is not specified, a default of 1 will be used.

     The marker type specifies the shape of the marker to be drawn.  If 
     the type is unspecified or zero, the current marker type (usually 1)
     will be used.  The software marker types are:
 
	 1	plus sign		12	asterisk
	 2	octagon			13	hourglass X
	 3	triangle		14	star
	 4	box		        15	dot
	 5	small X		        16	large X
	 6	diamond		        17	filled octagon
	 7	up arrow		18	filled triangle
	 8	X with top bar		19	filled box
	 9	Z with bar		20	filled diamond
	10	Y			21	filled star
	11	box with diagonals	22	minus sign

     Hardware marker types may differ.

     The marker size is a real number multiplier for the default marker 
     size.  If the size is zero or unspecified, the current size will be 
     used.

     The hardware/software marker flag must be HW or SW.  Otherwise, the 
     current value is assumed.