
   2DGR v1.0 for DOS
 
   (c) Copyright 1994-1995 J.Philippe Champagne - All right reserved.

   THIS IS A FREEWARE PROGRAM. IT MAY BE DISTRIBUTED SO LONG AS
   ALL THE FILES INCLUDED IN THIS PACKAGE REMAIN UNALTERED AND ARE 
   DISTRIBUTED ALONG WITH IT.


Description:

   2DGR is a program designed to draw or plot up to three mathematical
   equations entered by the user. It is incomplete but the current
   version is sufficient for general uses.
   It was build using an API which transforms a mathematical equation
   from a text format into a run-time computable equation.
   The complete C source code of this program as well as the API is
   available from the author (see below).

Hardware requirements

   This FREEWARE program requires an i386 CPU or better. A true
   color SVGA card is recommended, although the software will
   run with most cards.

Software requirements

   This FREEWARE software is an application that runs on the DOS
   operating system.

Package contents

   2DGR.EXE     Actual program
   README.TXT   This file
   ORDER-F.TXT  File containing the order form in order to obtain the
                complete C source code of the 2DGR.EXE, as well as the 
                Function Builder API.
   L-AGREE.TXT  File containing the license agreement which must be
                signed in order to obtain the C source code.
   FUNCREF.DOC  Microsoft Word 6.0 document containing the functional
                specifications of the Function builder API which
                was used to build the 2DGR.EXE program and which is included
                in the C source code package.
   FUNCREF.PRN  FUNCREF.DOC in postcript format.


Disclaimer, distribution and licensing

   You are given the right to use and make an unlimited number of
   copies of this FREEWARE software. You may not, however, disassemble,
   decompose, reverse engineer, or alter any of the files in the package
   in any way whatsoever.

   This software is provided as FREEWARE and cannot be sold.
   It may be incorporated with any commercial
   package, or in books or magazines, so long as it is
   accompanied by all the files included in this package.

   The author of this program assumes no responsibility whatsoever for 
   damages resulting from the use or misuse of this product.
   This software is provided on an "AS IS" basis, and its user
   assumes any all risks when using it.


How to use this software

   The 2DGR program requires you to enter an equation. You
   can consult information pages at the bottom by pressing
   "Page Up" and "Page Down". 
   The menu at the bottom of the screen suggests that you may
   choose to enter a new equation, change the scale, evaluate
   coordinates or exit from the program. This version of the 
   program does not allow the possibility to modify the
   scale or to evaluate coordinates. This is the main reason why
   this software is provided as a FREEWARE.


What is included in the C source code package

   The C source code package contains all the codes which were used
   to build the 2DGR.EXE, including the test software.
   The Function Builder API is a library which was built for the 
   DOS operating system but designed to be portable to other
   operating systems, including multi-tasking environments.
   The use of semaphores can be easily incorporated to the API
   in order to use this API with an application running multiple
   thread. The FUNCREF.DOC file may be consulted in order to have an idea
   of the important flexibility of its functional characteristics. 


How to obtain the C Source code

   You can have the C source code of this program as well as
   the C source code of the Function Builder API for $14 U.S.
    or $19 Canadian. Please complete the license agreement
   and order form included in this package, then print and sign it. Join
   your cheque or money order made out to "J.Philippe Champagne".

   Send everything to:

   J.Philippe Champagne
   18, 6th street East,
   Thetford Mines, Qc
   Canada
   G6G 5B3

   If the terms of the agreement do not correspond to your specific
   needs, you may contact the author in order to revise it.


Contacting the author through e-mail

   Philippe Champagne can be reached at:

        Philippe_Champagne@msn.com

   Please mention 2DGR in the subject line of your e-mail.

   You are invited to forward any comment,a means for the
   author to assess the popularity of this program.

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