( Not technical feather anatomy. I cherry picked a little. The extension of shaft is actually called the Rachis, you can just call me Rachis Alexandra lol )
I was reading the Amazon reviews and people seem to be confused on how to use the program. If you have a Kindle Fire and want to use this app the biggest thing to remember is use the “menu” button on the kindle ( on the right side, between the magnifying glass and the back arrow ). That’s where you can play around with the different algorithms & equations as well as reset, save, share or use as wallpaper, change the colors and set max iterations.