Newbie questions

I tried out the StarRupture demo and that reignited my itch for factory games. I hadn't played Satisfactory since beta so it's great to see how much it has developed. Soooo many QoL features! And this is the basis of my questions as I am sure there are ways to do things but I am not seeing the keybinds in Options, etc.

• Is there a way to paint an area to build lots of floor sections at once? Right now, I click on each panel one at a time and surely there is a way to build a 10x5 section flooring all at once??
• Is there a way to have the map automatically note mining site locations on my map as I see when when I scan? Or do I have to manually add them to the map?
• Is there a way to get rid of large rocks as they seem to be right where I want to build? Is it a matter of unlocking explosives like in Factorio?
• Same for those green gas locations. Does tech eventually exist to get rid of them?

Thanks in advance for your help and if you know of a good tips location, let me know. Random YouTube searches get a bit overwhelming :)