XGRAPH - X GRAPHer							
 Graphs n[i] pairs of (x,y) coordinates, for i = 1 to nplot.		

 xgraph n= [optional parameters] <binaryfile 				

 X Functionality:                                                      
 q or Q key    Quit                                                    

 Required Parameters:							
 n                      array containing number of points per plot	

 Optional Parameters:							
 nplot=number of n's    number of plots				
 d1=0.0,...             x sampling intervals (0.0 if x coordinates input)
 f1=0.0,...             first x values (not used if x coordinates input)
 d2=0.0,...             y sampling intervals (0.0 if y coordinates input)
 f2=0.0,...             first y values (not used if y coordinates input)
 pairs=1,...            =1 for data pairs in format 1.a, =0 for format 1.b
 linewidth=1,1,...      line widths in pixels (0 for no lines)		
 linecolor=2,3,...      line colors (black=0, white=1, 2,3,4 = RGB, ...)
 mark=0,1,2,3,...       indices of marks used to represent plotted points
 marksize=0,0,...       size of marks in pixels (0 for no marks)	
 x1beg=x1min            value at which axis 1 begins			
 x1end=x1max            value at which axis 1 ends			
 x2beg=x2min            value at which axis 2 begins			
 x2end=x2max            value at which axis 2 ends			
 reverse=0              =1 to reverse sequence of plotting curves	", 

 Optional resource parameters (defaults taken from resource database):	
 windowtitle=      	 title on window				
 width=                 width in pixels of window			
 height=                height in pixels of window			
 nTic1=                 number of tics per numbered tic on axis 1	
 grid1=                 grid lines on axis 1 - none, dot, dash, or solid
 label1=                label on axis 1				
 nTic2=                 number of tics per numbered tic on axis 2	
 grid2=                 grid lines on axis 2 - none, dot, dash, or solid
 label2=                label on axis 2				
 labelFont=             font name for axes labels			
 title=                 title of plot					
 titleFont=             font name for title				
 titleColor=            color for title				
 axesColor=             color for axes					
 gridColor=             color for grid lines				
 style=                 normal (axis 1 horizontal, axis 2 vertical) or	
                        seismic (axis 1 vertical, axis 2 horizontal)	

 Data formats supported:						
 	1.a. x1,y1,x2,y2,...,xn,yn					
 	  b. x1,x2,...,xn,y1,y2,...,yn					
 	2. y1,y2,...,yn (must give non-zero d1[]=)			
 	3. x1,x2,...,xn (must give non-zero d2[]=)			
 	4. nil (must give non-zero d1[]= and non-zero d2[]=)		
   The formats may be repeated and mixed in any order, but if		
   formats 2-4 are used, the d1 and d2 arrays must be specified including
   d1[]=0.0 d2[]=0.0 entries for any internal occurences of format 1.	
   Similarly, the pairs array must contain place-keeping entries for	
   plots of formats 2-4 if they are mixed with both formats 1.a and 1.b.
   Also, if formats 2-4 are used with non-zero f1[] or f2[] entries, then
   the corresponding array(s) must be fully specified including f1[]=0.0
   and/or f2[]=0.0 entries for any internal occurences of format 1 or	
   formats 2-4 where the zero entries are desired.			
 mark index:                                                           
 1. asterisk                                                           
 2. x-cross                                                            
 3. open triangle                                                      
 4. open square                                                        
 5. open circle                                                        
 6. solid triangle                                                     
 7. solid square                                                       
 8. solid circle                                                       

 Note:	n1 and n2 are acceptable aliases for n and nplot, respectively.	

 Example:								
 xgraph n=50,100,20 d1=2.5,1,0.33 <datafile				
   plots three curves with equally spaced x values in one plot frame	
   x1-coordinates are x1(i) = f1+i*d1 for i = 1 to n (f1=0 by default)	
   number of x2's and then x2-coordinates for each curve are read	
   sequentially from datafile.