Often when I publish a post or page, it is not truly finished - I would have wanted to write more, but didn't have the time to incorporate all of my ideas and material.
Later on down the track - generally days, weeks or months later - I go back and edit that post or page to enhance it further.
What would be convenient is if in the edit screen, there would be an extra textbox to store my future ideas or other relevant material/content.
This would be saved along with the post or page, but not published. Then when I edit that page or post in the future, I will be able to see my notes and use them to update the content.
At the moment, there is no proper solution for this.
The only way to simulate this feature is to add a snippet of PHP code to functions.php to create a dummy WordPress shortcode that does nothing and use it to enclose my spare content.
This is the first paragraph of my post content
This is the second paragraph of my post
This is future content that will be incorporated when I have time.
It will not be displayed to people who read this page or post.
Obviously, this dummy shortcode technique is a sub-optimal hack - I want to keep my notes or future content completely separated from the current post content.
I searched WordPress Ideas to see if anyone else had suggested this, but found nothing.
The following idea that someone else suggested is vaguely similar, except that the "unfinished content" is not stored with the specific post/page that it is associated with