Keep Words Together with No Break
I have a client whose company name is two words, let's say "Typographic University." Is there a way to keep these two words always together, and never have them break apart at the end of a line, in InDesign? A script? A setting in the Dictionary?
While there's no way to add this sort of thing to a dictionary, you can use InDesign's No Break feature. To stop any word or words from breaking, select the word or phrase and choose No Break from the Control panel menu (when it's in Character formatting mode in CS1 or CS2, or anytime in CS3). You can also find this in the Character panel. However, if you're going to use it a lot, I highly encourage you to give it a shortcut with Edit > Keyboard Shortcuts.
Of course, you don't want to apply No Break to each and every instance of the company name! Instead, open Find/Change (Command/Ctrl-Shift-F) and apply the formatting to the Change To field. (You may have to click the More Options button to see the formatting options.)
When you click Change All, InDesign searches for all instances of the phrase and applies the No Break character format to it. (You get bonus points if you use character styles instead of manually applying the formatting! ;) )