Wolfgang and Mohamed, thanks very much to both of you. I downloaded the deja vu font and installed it as I would install any other font on my Mac (using "Add fonts" feature in the font book). I see it listed now in the font book and can use it in word. However, it does not show up when I type mtxrun --script fonts --list in the terminal. I am not interested in using Xetex. I am using MKIV, which is I suppose Luatex and hence did not run mktexlsr. However, after I installed the font and saved the type-dejavu.tex file in the appropriate place, I did run luatools --generate. Do I have to do something so that it shows up in the list that I get by entering mtxrun --script fonts --list at the terminal? Thanks in advance for your help.