Introduction - If you have any usage issues, please Google them yourself
Graph with no options takes pairs of points (two numbers per line) from the given file (or st andard input) as x-and y-values and plots them o n the screen. connected by straight lines. A string surround ed by quotes "..." may follow a pair of points. and will be displayed starting at that point. If an input file is specified, the program waits for a keypress. then resets the screen parameters and clears th e screen before exiting. If the data comes from t he standard input, the program exits without clearing the screen o r resetting it