I designed the cube in the attempt to make a calibration cube gave gave much more information about your setting than just directions. Here's a run down of all the test it has in it

1. Labeled Dimensions to see how your printer/slicer is warping the length of sides
2. Text at the bottom so you can see if your nozzle is to high or low
3. Labeling Text is 1mm deep and allow for you to see how your printer handles small bridging as well as if it making the text to deep or shallow
4. Hollowed out core to show if your printer is having string, drooping, or overhang issues
5. 14mm hole so you can see how much your printer over sizes or under sizes holes
6. A stair stepping test that is meant to show how aperient stair stepping will be on future prints with current setting

I hope this will help some people tune their printer better and faster than other tests, enjoy:)