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    Instructions for using Theo Gray's   
    Instructions for using Theo Gray's   
                                         
           spiral making program.        
           spiral making program.        
                                         
                                         
               By Theo Gray.             
                                         
  When the program has loaded you will be
  given a  title  screen  where  you  can
  choose one of the following things:    
                                         
  "E" - This  will  clear  the screen and
        then  draw  a   set  of   example
        spirals.                         
                                         
  "O" - This  option allows you to design
        your own  screens  with  as  many
        spirals as you like on one screen
        at once.                         
                                         
        First you are asked  to  choose a
        colour (1-7),  although  I  don't
        think  there  is  anything  wrong
        with  using  colours  above 7  to
        create different effects.        
                                         
        Then you will  be asked  for an X
        and a Y  co-ordinate.  This  will
        give the point for the spiral  to
        start drawing from.              
                                         
        Then you are asked for the number
        of half  turns  you  want. 2 will
        take   the   spiral   round  once
        completely.                      
                                         
        Next you are  asked for the width
        of   the    gap    between   each
        spiralling line.  If  this  is  a
        negative  number  then the spiral
        will be drawn 180  degrees  round
        from normal.                     
                                         
        Finally  you  asked to choose the
        procedure  to  use  -  normal  or
        other.  The   'normal'  procedure
        draws spirals with the  start and
        finish  points  in  a  horizontal
        line, and  the  'other' procedure
        draws  them  with  the  start and
        finish points in a vertical line.
                                         
  "A" - ends the program                 
                                         
  The  procedures  which draw the spirals
  are  very  short  and  simple, and  are
  called:                                
                                         
  PROCdraw(t%,x%,y%,c%,w%)               
  and                                    
  PROCdrawsin(t%,x%,y%,c%,w%)            
                                         
  which  can  be  used in any application
  and are almost exactly the same.       
                                         
                                         
  Editor: Try entering these in response 
          to the prompts:                
                                         
                                         
       6,320,512,6,100,O                 
       5,320,512,6,-100,O                
       6,960,512,6,-100,O                
       5,960,512,6,100,O                 
       3,640,768,6,100,O                 
       5,640,768,5,-100,O                
       6,640,256,5,-100,O                
       3,640,256,5,100,O                 
                                         
       6,640,512,12,20,N                 
       5,640,512,11,-20,N                
                                         
   This  data  is similar  to that in the
   demo   program,  it   will   give  you
   something   to  experiment  with.  Try
   altering the values slightly each time
   to see what happens.