****************************SAM'S PONG*****************************
                                by Sam Davies (daviesp@iia.org)
For the TI-82 Graphing calculator.
Included in the group file, there are two versions of this program, that are
both very much the same, the only difference is that PONGFAST is much faster,
but it doesn't include the PAUSE keys or the cheat code.  At the end, the
ASCII listing is only for the regular pong, PONG.

Features:
        PAUSE
        MULTIPLE DIFICULTY-LEVELS
        TWO DIFFERENT SCORING OPTINS
        CUSTOM PICTURE BACKROUNDS
        DEFAULTS
Pong is a graphics game.  The object is to keep the ball from hitting the
ground.
The main menu is as follows:

        MAIN MENU
        1:START GAME
        2:DIFFICULTY
        3:SCORING
        4:PICTURE SELECT
        5:QUIT

Here is what each option does:
        1:START GAME
                This starts the actual game play.  It will first display a
                message reading:
                        NOW ENTERING
                        PONG,PRESS CLEAR
                        TO STOP(ENTER TO
                        CONTINUE...)
                So, press enter to start the game, and while the game is in
                progress, press clear to be returned to the main menu.
                During play, the buttons you use are the left and right
                arrow keys  <-  ->, and the gray number keys to pause (only
                on the PONG version, not the PONGFAST version).  These keys 
                move your paddle (on the bottom of the screen back and forth 
                in the directions indicated.

                NOTE: If the paddle size was set to ten, it will fill the
                        entire screen, and you will not be able to move the
                        paddle.
                NOTE: If your paddle size was set close to 0, the paddle will
                        only be one pixel long, so watch out!
        2: DIFFICUTLY
                This will bring you to another menu:
                        DIFFICULTY LEVEL
                        1:EASY
                        2:MEDIUM
                        3:HARD
                        4:IMPOSSIBLE
                        5:CUSTOM SETTING
                The first four choices are pre-set settings, which will
                set the variables as following:
                        EASY:
                                size of paddle          37.6 (when entered 4)
                                X-speed                 3
                                Y-speed                 3
                                paddle speed            5
                        MEDIUM:
                                size of paddle          18.8 (when entered 2)
                                X-speed                 4
                                Y-speed                 7
                                paddle speed            5
                        HARD:
                                size of paddle          4.7 (when entered .5)
                                X-speed                 5
                                Y-speed                 10
                                paddle speed            4
                        IMPOSSIBLE:
                                size of paddle          0 (when entered 0)
                                X-speed                 10
                                Y-speed                 10
                                paddle speed            5
                The fifth option, CUSTOM SETTING lets you customize each of
                the above variables.
                After selecting one, you will return to the main menu
                NOTE: Pong uses the variables S (size of paddle), K (X-speed),
                        R (Y-speed), and V (paddle speed). When the program 
                        runs it uses whatever is currently stored in these
                        variables as defaults, so if you used these variables,
                        go to this menu to go to another setting.
        3:SCORING
                This option lets you access the two different scoring methods
                used in pong, ONLY + and + AND -
                ONLY +
                        This option makes the program only add points when
                        the paddle hits the ball, and not take points away
                        when the ball hits the ground.
                + AND -
                        This option makes the program add points when the
                        paddle hits a ball, and subtract points when the
                        ball hits the ground.
                NOTE: The current scoring method is stored in the variable O
                        If O = 1, the ONLY + method is used, if O = 2,
                        the + AND - method is used.  The program uses what
                        ever is stored in the variable as a default, to change
                        it, go to this menu
        4:PICTURE SELECT
                The PICTURE SELECT MENU is as follows:
                        PICTURE SELECT
                        1:Pic1
                        2:Pic2
                        3:Pic3
                        4:Pic4
                        5:Pic5
                        6:Pic6
                This menu chosses the background picture to be displayed
                while running PONG.  Only select a Picx variable if you
                know you have a picture stored to it.
                NOTE:  PONG uses the variable P for the default picture
                        (1-6) P is not whole number from 1 to 6, no picture
                        will be displayed.  To change the picture, you may
                        change the variable ahead of time.
        5:QUIT
                This option returns the original graph-settings, and
                ends the program
If you have Questions, Comments, Additions, or anything else, plese send
E-MAIL to Sam Davies, daviesp@iia.org.
