Re: Highlighted Text ?
I had a similar issue but have just resolved it today.
In my case the word was underlined with dots rather than highlighted red. I use Firefox so this may account for the difference.
When I mouse over the word (mast in this case), a small box appears offering to look up other articles on “mast”. Clicking brings up a string of search results. So it appears to be a keyword with the link generated by the site or administrator.
So I went to the search page, and found a menu choice for “Tag search”. Selecting this shows me a page called “Tag cloud” with a listing of 70 words and the heading “These are the 70 most used thread tags”. I checked a few posts, and in each case when any one of those 70 words appears it is highlighted in the article text.
Go to Quick Links, Edit Options and scroll down to “Auto link popular tags”. Select Off.
Currently cruising Queensland coast