What does this pin button do?? It seems to do nothing ;-;

AtCoder's Pin Contest Button
What does this pin button do?? It seems to do nothing ;-;

| Rev. | Язык | Кто | Когда | Δ | Комментарий | |
|---|---|---|---|---|---|---|
| en1 |
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LeticiaFCS | 2021-09-18 06:19:04 | 160 | Initial revision (published) |