Made a mistake in your last message and want to quickly correct it? One way of doing this is via the three dots on a message and select edit:
This works fine, but takes a few steps. Suppose you submitted your message too fast, then you would want to correct it directly.
Fortunately there is a shortcut to edit your last post by simply pressing the up arrow key ⬆️. This will directly jump to the edit view of the message:
Note: this is only applicable if your message is the last post in the thread.