#OnceUponATime, long ago, some programmer sitting in their cubicle wrote the first code that did drag-and-drop. When would that have been? Since then, that code and the meme of drag-and-drop itself have propagated throughout the entire universe of #graphical UIs, mutating and evolving as new coding substrates (OS languages) appear and also evolve. Does the original core code still exist anywhere? Where might that be? #writeMeABook, please, somebody, that tells me this story.