What is this history window in vim called?

misspelling, vim

Solution

It is called the command-line window

:h command-line-window

You can bring it via `<c-f>` while on the prompt or `q:` in normal mode

:h q:

Problem

Sometime when I execute a vim command, a history like window appears out of nowhere. Anyone knows what it does, what it's called and how to make it appear?

Original source