I prefer TeX and friends (LaTeX, MetaPost, BibTeX) when writing papers. But sometimes I have to use Microsoft Word. One annoyance I have observed in many documents written in Word is line breaks (word wrapping) on wrong places. Not all spaces are a correct place to break lines in a text. In TeX I would write the tilde (~) character instead of a space, and in HTML I would use the character entity  . This would create a space were a line break will not occur. However, this is also easily possible in Microsoft Word. Instead of inserting the space by typing on the Spacebar, press Ctrl-Shift-Spacebar, and a non breakable space is inserted in your document.