
                                    !Graph
                                  ==========

                          Desktop graphplotter , v. 1.17
                          by Henrik Bjerregaard Pedersen
                                 01 Februar 1992

      Copyright
     ===========

    This program is Public Domain, so do with it whatever you want, but
   please leave this file unchanged.

      Start
     =======

    Start the application the usual way, and it installs itself on the
   iconbar. Click MENU on the icon, and you get the standard options,
   such as Info and Quit, plus the option Function. Select this and a
   window is opened.

     Functions
    ===========

    The program uses BASICs EVAL, which means that all BASIC math and
   arithmetic-functions are valid. Four different functiontypes are
   catered for, covering the must common used problems. Please note :

            The parameter (X , V or T) MUST be in uppercase/capitals.

    Enter the function, the range of each axis, and the range of the
   parameter, then click OK, and a window opens with the graph in it.

    Auto range
   ============

    If this is selected, the program adjusts the X- and Y-axis-range
   to ensure the whole graph is visible.

    Steps
   =======

    Decides how many steps the parameter-range is divide into. In most
  cases 100 or 200 will be sufficient. Maximum is 500, minimum is 1.

    Coordinates
   =============

    Click ADJUST in the graph-window, and the coordinates of the mouse
  will appear at the bottom of the function-window.

    Menu
   ======

    Click MENU in the function-window, and a menu appears.

         Save CSV   :     Allows you to save data as a 
                         Comma Seperated Values-file.
         Save Graph :     Allow you to save the function as a textfile
                         which can be reloaded.
         Save Draw  :     Save as Draw-file.
         Default    ..     Use      :  Resets the function-window to the
                                      default values.
                           Save as  :  Saves the contents of the function-
                                      window as the default, which will
                                      be loaded on startup.

    Click MENU in the graph-window, and another menu appears.

         Grab area  :     see below
         Axes       :     Show axes or not
         Zoom       :     Standard-Zoom-window
         Print      :     Using RiscOS-printerdrivers
         Save       :   CSV      :   see above
                        Graph    :   see above
                        Draw     :   see above

    Grab area
   ===========
    
    An easy way of zooming is by selecting the option Grab area from the
   graph-window-menu, click SELECT in the graph-window and then drag a 
   box to cover the area you want to examine closer. Handy when you are
   seeking singularities.


      ------------------------------------------------------------------

    Any comments , improvements , or bugs ???

    My address is :

           Henrik Bjerregaard Pedersen
           Stengaards Alle 13 B
           DK-2800 Lyngby
           Denmark
