I like to write fictional stories, but with ideas I get from the real world. I wonder how loosely can you use the term "Inspired by a true story" I mean technically you could write a story about a plane accident and say you were "inspired" by the 9/11 terrorist attacks. I feel if I give it the "Inspired by a true story" tag, and then drift too far from the facts of the story, it makes me out to be a liar. On the other hand if I do not tag it, I feel readers/viewers will see it as trying to pass a real life story as my own creation.