In-situ "Save as draft" and "Post" functions with edit window

While it is a significant challenge to find fault with your excellent MOOC platform, I would like to suggest adding some functionality to the post edit window, namely, the ability for the user to save the post as draft before posting.
This will have three key benefits:

• it allows users to edit the post prior to generating the subscription email


• it allows users to refine what they have written, thereby increasing the overall quality of posts within forums


• it affords users time to contemplate the appropriateness and consequences of posts more thoroughly prior to posting, without risk of losing their work.