SFT - Stands for "Scratch Feature Tests" This is a test for seeing how much slower getting the index of the variable from the contents is than just using the index of the string. You can see the difference in speed of each method.
Results: Using the index ALOT faster than using the index, so much so, that scratch says it performs instantly. The results show that you should really not be using the `item # of ${str} in ${list}` if you can avoid it as it would probably cause a massive increase in performance