What I want to be able to do, while editing a post, is to easily change some text into a link that searches a website for that text.
For example, if the post had the term "castle", I would like to be able to highlight (or any other method of selecting the term) and have that text become a link to a search from a website for that term.
I edit a wordpress site that has not yet gone public where this will be a very common occurrence. My strength is in editing english, not code. I can copy the search result address into a hyperlink for that text manually, but it is not realistic to do it one at a time.
I looked for a plugin or shortcode that would do this for me, but I was unable to find one either because it does not exist or because my searches were poorly defined.