A short correction to my previous post. What was called an "orphan" in it is more often called "wiszący spójnik" ("hanging conjunction") in Polish. The "Orphan" is a more official term and "hanging conjunction" is more colloquial. The typographic problem of "hanging conjunctions" doesn't exist in most languages, including English, because a single letter or digit at the end of the line is irrelevant in them.
As I see it, an "orphan" is the first line of a paragraph at the bottom of the column or page in Publisher, so please do not confuse these two different typesetting errors.
Forget about my request for supporting Hunspell, because I have found that Publisher supports it and it works well.