How do I create a Hard Space? That is to say, a space that prevents wrap-around, ensuring the two words either side of the space are always together on the same line.

I need this to ensure an ellipsis doesn't get split up. (i.e. <full stop><hard space><full stop><hard space><full stop>)

In WordPerfect it is the spacebar combined with one of Shift-Ctrl-Alt (I can't remember which). None of those combinations works for me in Word.

Ctrl+Shift+Space

While you're at it, try Alt+0133 for a "real" ellipsis :-}

Ctrl-Shift-Space, which inserts an ASCII 160 non-breaking space works fine in most cases. Do note, though, that this character's behaviour has changed with Word 2013. In Word 2013 an ASCII 160 non-breaking space conforms to the CSS space rules and will expand/contract just like other spaces do when justification is used. In Word 2013, if you need a fixed-width non-breaking space you'll need to use a different non-breaking space that does have a fixed width (e.g. Narrow No-Break Space (202F, Alt-C)). One not-so-obvious visual difference is that the Narrow No-Break Space still appears as a space without the º that appears for the ASCII 160 non-breaking spaces when the formatting display is turned on.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]