Click on stage to toggle visibility of variables. Press space to graph current data set. Press down arrow to add a value, up to delete last value, left to clear data list, and right to add some random data values. This graph/plot displays the changes of values in the order they are listed, meaning the x-axis unit must be increasing linearly (for example: time). To import a data set into this tool, click "see inside" and right-click on the data list. The graph increments for the y-axis are scaled automatically for easier viewing. The sizes/shapes and location of the grids and the style (scatter plot or line graph) can be altered with the sliders. NOTE: this algorithm DOES NOT work with small decimals. Try to only input integers. Tip: as needed, eliminate decimals by multiplying by powers of ten. There may still be other bugs in the code.