Greasy Fork is available in English.
Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding. Also adds the ability to expand/collapse a comment by clicking anywhere on it.
< Σχολιασμός για τον κώδικα Hacker News Contextual Comments (sticky tree)
Excellent script to contextualize deeply nested comments and their parents.