Aha ok. No problem. :-)
Went through a couple of routes and edited directions (added, relocated, fixed symbols). It's working really well now on laptop. I'm just worried that new users don't see the possibility. Maybe a text label that it's possible to fine tune by shotcuts.
That's good to hear, thanks Peter. There should be a tooltip shown when you hover over the position slider at the top of the map - this shows the keyboard shortcuts that you can use to move the slider, so hopefully people will spot this. We've also added them to our How-To Guide on Using Keyboard Shortcuts.