In event cases we can write something like "Something has been done in case 123" and FogBugz automatically replaces "case 123" with link to case with number 123. And it's great.
But in other countries we used to write in our native languages. In Russia it's Russian, obvious :) So the links auto insertion became not so nice. We have to write "Это было сделано в кейсе case 123" or "Это было сделано в case 123". So it would be great if we can define a list of synonyms to word "case" for purpose of autocompletion. And it should be a list, not a single word, because in Russian we have words declensions (different forms), i.e. "кейс", "кейсе" where in English you use only the "case" word. And we also want to be able to use word "case", so we have 3 words to serve as links autoinsertion keywords.
In other countries (i.e. Germany or Spain) they have their own set of words. That's why setting these keywords through options would be the reasonable improvement.