Yes, that is Fibonacci. The program finds the sum of all the even Fibonacci numbers less than 4 million. As for more examples, I will certainly add in the future.
The 「」was a design choice that I made so that I can more easily code the translator to differentiate between variables and other names (e.g. functions), with the side benefit of making the code slightly more readable. Spaces I bet can certainly achieve the same level of readability, but would require more complex code. I'll think about implementing that, however.