On Aug 2, 2009, at 9:27 PM, Bob Yu wrote: > Dear all, > > I have a very long word with math mode in between. How can I use > hyphenation? > > for example > > \hyphenation{mac-macmac-mac$_{2}$mac-mac} this does not work. Can you try suggesting hyphenation by using \- ? For example mac\-macmac\-mac$_{2}$\-mac\-mac