I love the idea behind this. It only disappears when I'm done writing the para, i.e. when I move to next para. Which renders the feature obsolete when I'm writ

I love the idea behind this. It only disappears when I'm done writing the para, i.e. when I move to next para. Which renders the feature obsolete when I'm writing big paras. Could this be done to letters, after x secs they disappear.