For functions which require you to enter limits, the arrow keys on the far right of the computer keyboard may be used to set the position of the vertical bar cursor that appears on the screen. The computer will beep each time the arrow keys are used to change a limit value. A brief description of what each blue key function does, and how to use it, follows. Hitting the blue key marked options will display this list as well. When you enter the file name, leave off the .TG suffix.
File names are limited to five characters.
Hit return when done, and the computer will redraw the plot. The computer will redraw the plot after each arrow key stroke. Hit return when you are done placing the vertical cursor bars on the screen, and the computer will calculate the onset of the event. Press Y, then return, to begin plotting. When finished, turn off the plotter, the interface, the computer, and the System 4 controller.