I registered to have a look at the edit page, as I couldn't see the Bus Station on the map - whereas the bus stop by the station has a bus symbol. The drummer street one has no symbol.

But it looks like it is something in the renderer.

I've never used the edit interface before and found it quite confusing. I think I maybe have moved stuff for real when I didn't mean to do anything. I'd assumed there'd be a save (to not press) or an undo button, but can't see one.

How do i see what I've done and undo it?