i think that a rotation tool would be usefull so people would not have to comepletely remake a creation, its kind of hard and its a tedius procces
Ctrl+XClick and drag over the thing you want rotated
Ctrl+V
Ctrl+R until it is properly rotated (or Ctrl+Shift+R to flip it)Click to place it
well the initial guide no tell me thank you cory
Use this wiki page for more information.
https://powdertoy.co.uk/Wiki/W/Hotkeys.html