Very few programs have this ability, and those that do are generally anti-intuitive. It was written to be an education tool, and can be used to help students understand algebraic concepts such as solutions to systems and even simple calculus concepts such as maximums and minimums. It will work equally well on an XT machine as it will on a 486 machine. In fact, it was written on a Leading Edge Model D, an Intel 8088 based machine. The 'notitle' option prevents the opening screen from displaying.
Every command is one letter.
In order to execute a command, type the letter and press , then follow the instructions. In order to graph a function, just type the function in and press . Also, make sure each argument inside a function is surrounded by parentheses. Loads up previously saved equations and range values. Enter the file name without the extension at the prompt.