# remove

The `remove` function from the `History` class is used to delete message blocks from the history based on their index. By default, the index is set to -1, which results in deleting the last message in the list.

**Properties:**

* **index** — the index of the element to be deleted.

**Example usage:**

```python
from litegpt.lib import History

# Creating a history object and removing a block by index
history = History()
history.remove(1)
print(history)
```

Thus, the `remove` function allows for efficient management of history by deleting messages at the specified index.