How could u write down beta, gamma in your source code?

[dragen1860]

Hi, I found your code has the latin characters $\beta$, $\gamma$. It's wired and interesting for me. Could you explain how to achieve this?

[loudinthecloud]

Sure, I inserted unicode characters instead of letters or words, it looked more clean and elegant at the time.
On Linux, use ctrl + shift + u followed by hex code.