So I am currently building space ships, and there is of course the approach of crunching numbers and calculating everything.
However it got me thinking after improving some non-obvious details (How much does removing mass improve the ships performance?) that we'd want to actually see the numbers ...

So I am on my way to Vulcanus, and as I was on the way more than the halfway point, I got more asteroids, so I slowed down, by toggling the button "Automatic <-> Paused Thrust".

Once I speed up again (by clicking on the Triangle go button), I retriggered the autosave, which is named _autosave ...