UNDO!

yes that feature would be great

Yes please! There's nothing quite like placing a several hundred plank blueprint only to realise that you are a couple of ticks out with placement, or accidentally placing a giant wad of blocks when you meant to use the terrain tool...

I've moved this topic to the suggestions section, since this would be more a core feature of the game instead of an API function^^
Nevertheless, an "undo" feature at least for blueprints will be available with the next update Maybe in the long run there will be also an undo feature for blocks or construction elements, but I guess it's most urgently needed for blueprints

Certainly and undo for blueprint placement is needed, but I think an Undo for any action is needed as well. A simple last action undo would help tremendously, but an undo/redo history would be awesome!