Save answer as draft until posted

I was writing an answer for a question, http://www.c-sharpcorner.com/forums/advice-for-video-storage, since the answer was a broad and lengthy one the session timeout may have happened somewhere. When I posted the answer, I was redirected to home page and all of the content that I wrote was lost. I suggest that we store the answer as a draft until the author posts it publicly. This way, the answers will be saved from the session time out too. I think, it is annoying to lose the answers and their text that we have come up with.