The 'Formatting help' link to the dtext help page that appears when commenting or making a forum post would appear while editing tags or uploading
The dtext guide page is full of all kinds of useful tricks, but it requires a few extra steps to access if you find yourself in need of it while editing a post's description. Using dtext can be useful in descriptions for things like this:
Artist's description
Description from the artist's tumblr/furaffinity
This would be a small Qol change that shouldn't be too hard to implement but will make everyone's lives just that little bit easier.
This would only effect editing or uploading, but if anyone knows anywhere else a direct link would be useful, feel free to comment.