This extension was quite simple. As the instruction said, I just needed to create a new symbol in a rule, call elif case in drawString() function. Because I wanted to berries, my new symbol was B. For every B in characters, I used turtle.dot(), which would look like berries. Below is the image.
This week's project was difficult as usual but fun because L-system was a new concept. I think project 7 was a mix of new concept like L-system and old ones like turtle and list. I wish I could have came up with a nested for loop to created the grid because this project had many opportunities to use nested loops.
Sources, imported libraries, and collaborators:
Selim's write-up gave me an idea of using list and indexes to add parameters to the L-systems. To do so, though, I needed to revisit my codes written from project 5. Professor Skrien helped me to improve my codes as well. I imported turtle, sys, and libraries I created from the lab.