I agree with you nux. 9VSWU, If your post is visible for public then you want to chance something in your post there is an option to edit its text, formatting even you can edit images and url. Click on edit button it will open in edit mode. Then change your post and click on save button. Your changing will appears in your post. Same as in editing mode you can delete your post.IN some communities this options is available in editing mode. But here it is not available.