I add some scripts to get the article name, filter for non-words, like ( , . ? - ) and remove them, after that add after each word a comma so you can copy and past in Keywords field. The script is not complete and need some adjustments for non-words.
Ah, ok, I thought it goes through the existing keywords and then presents matching words related to the article. The article title is there for copy and paste anyhow. What is the added value from your script?