Originally written by @Overengineer1, it was adopted by @AndyMt and continued for a while.  @AndyMt stopped and gave permission for anyone else to adopt it.  Since I really like this and use it, I've done so. Original thread here: https://forum.kerbalspaceprogram.com/index.php?/topic/129607-1 Second thread here: https://forum.kerbalspaceprogram.com/index.php?/topic/148448-14 Also thanks @sarbian for all the useful MechJeb code of which parts were/are incorparated into this plug