I didn't manage to grasp it from quickly skimming the video and the gifs: is it possible to retry a command in piper until I find the right combination of flags, and only then press `|` to push it to the buffer? Ideally, keeping the incomplete command visible for editing all the time? Also, can I get back to older contents of the buffer, i.e. a couple `|`s back? If yes, that might be basically what I wanted up to be from the beginning.