SECTION./ANY
LABEL/ANY filename
	write text labels stored in a file on the image display
SECTION./DISP
LABEL/DISPLAY labl [position] [mode] [option] [font] [key_flag]
	write a label on the image display
SECTION./GRAP
LABEL/GRAPHIC label [x_pos,y_pos[,wo|,mm|,sc|,no]] [angle] [size] [pos_ind]
	     write a label_string on the graphics device
